UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 6)*

                                  Presstek Inc.
                                (Name of Issuer)

                         Common Shares, $0.01 par value
                         (Title of Class of Securities)

                                   741113 10 4
                                 (CUSIP Number)

                                December 31, 2005
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

      |_|   Rule 13d-1(b)

      |X|   Rule 13d-1(c)

      |_|   Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).



CUSIP No. 741113 10 4                 13G
--------------------------------------------------------------------------------
1.    NAME OF REPORTING PERSONS
      I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

      Peter R. Kellogg
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [_]
                                                                         (b) [_]

--------------------------------------------------------------------------------
3.    SEC USE ONLY


--------------------------------------------------------------------------------
4.    CITIZENSHIP OR PLACE OF ORGANIZATION

      United States
--------------------------------------------------------------------------------
               5.    SOLE VOTING POWER

                     5,749,331
               -----------------------------------------------------------------
  NUMBER OF    6.    SHARED VOTING POWER
   SHARES
 BENEFICIALLY        51,200
  OWNED BY     -----------------------------------------------------------------
    EACH       7.    SOLE DISPOSITIVE POWER
  REPORTING
   PERSON            5,749,331
    WITH       -----------------------------------------------------------------
               8.    SHARED DISPOSITIVE POWER

                     51,200
--------------------------------------------------------------------------------
9.    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

      6,038,331
--------------------------------------------------------------------------------
10.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*  [_]


--------------------------------------------------------------------------------
11.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

      17.1%
--------------------------------------------------------------------------------
12.   TYPE OF REPORTING PERSON*

      IN, HC
--------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No. 741113 10 4                 13G
--------------------------------------------------------------------------------
1.    NAME OF REPORTING PERSONS
      I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

      IAT Reinsurance Company Ltd.
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [_]
                                                                         (b) [_]

--------------------------------------------------------------------------------
3.    SEC USE ONLY


--------------------------------------------------------------------------------
4.    CITIZENSHIP OR PLACE OF ORGANIZATION

      Bermuda
--------------------------------------------------------------------------------
               5.    SOLE VOTING POWER

                     5,669,331
               -----------------------------------------------------------------
  NUMBER OF    6.    SHARED VOTING POWER
   SHARES
 BENEFICIALLY        NONE
  OWNED BY     -----------------------------------------------------------------
    EACH       7.    SOLE DISPOSITIVE POWER
  REPORTING
   PERSON            5,669,331
    WITH       -----------------------------------------------------------------
               8.    SHARED DISPOSITIVE POWER

                     NONE
--------------------------------------------------------------------------------
9.    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

      5,669,331
--------------------------------------------------------------------------------
10.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*  [_]


--------------------------------------------------------------------------------
11.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

      16.3%
--------------------------------------------------------------------------------
12.   TYPE OF REPORTING PERSON*

      CO
--------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No. 741113 10 4


ITEM 1(a). NAME OF ISSUER:

            Presstek Inc. ("Presstek")

ITEM 1(b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

            55 Executive Drive
            Hudson, New Hampshire 03051

ITEM 2(a). NAME OF PERSON FILING:

            This statement is filed on behalf of Peter R. Kellogg and IAT
Reinsurance Company Ltd. ("IAT"), a Bermuda corporation. Mr. Kellogg is the sole
owner of IAT's voting stock, is a member of IAT's board of directors, and is the
President and CEO of IAT. A joint filing agreement of Mr. Kellogg and IAT is
attached as Exhibit A to a previously filed 13G.

            This statement relates to 5,669,331 shares of Presstek held by IAT
and its wholly-owned subsidiaries, 51,200 shares of Presstek held by a
foundation controlled by Mr. Kellogg and his wife, plus an additional 80,000
shares held by companies controlled by Mr. Kellogg. Mr. Kellogg has sole
dispositive and voting power with respect to the shares of Presstek owned by IAT
and its subsidiaries. Mr. Kellogg disclaims beneficial ownership of the shares
owned by the foundation and by IAT and its subsidiaries, and this statement
should not be deemed to be an admission that Mr. Kellogg is a member of any
"group" within the meaning of Section 13(d)(3) of the Securities Exchange Act of
1934, as amended, and the rules and regulations thereunder.

ITEM 2(b). ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:

            120 Broadway, New York, NY 10271

ITEM 2(c). CITIZENSHIP:

            IAT is a Bermuda corporation, and Peter R. Kellogg is a citizen of
            the United States.

ITEM 2(d). TITLE OF CLASS OF SECURITIES:

            Common Shares, $0.01 par value

ITEM 2(e). CUSIP NUMBER:

            741113 10 4



CUSIP No. 741113 10 4


ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULE 13d-1(b), OR 13d-2(b) OR
        13d-2(c), CHECK WHETHER THE PERSON FILING IS A:

            N/A

ITEM 4. OWNERSHIP

      (a)   AMOUNT BENEFICIALLY OWNED: 6,038,331 shares

      (b)   PERCENT OF CLASS: 17.1%

      (c)   NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS:

            (i)   Sole power to vote or to direct the vote: 5,749,331 shares

            (ii)  Shared power to vote or to direct the vote: 51,200

            (iii) Sole power to dispose or to direct the disposition of:
                  5,749,331 shares

            (iv)  Shared power to dispose or to direct the disposition of:
                  51,200

ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

            If this statement is being filed to report the fact that as of the
            date hereof the reporting person has ceased to be the beneficial
            owner of more than 5 percent of the class of securities, check the
            following: |_|

ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON

            The non-voting stockholders of IAT and the beneficiaries of the
            foundation have the right to participate in the receipt of dividends
            from, or proceeds from the sale of, the shares held by them in
            accordance with their respective ownership interests in IAT and the
            foundation.

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
        SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY

            See Exhibit B.

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP

            Not Applicable

ITEM 9. NOTICE OF DISSOLUTION OF GROUP

            Not Applicable



CUSIP No. 741113 10 4


ITEM 10. CERTIFICATION

            By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are not held for
the purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.



CUSIP No. 741113 10 4


                                    SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

                                  IAT REINSURANCE COMPANY LTD.

Dated: February 14, 2006
       New York, New York         By: /s/ Marguerite R. Gorman, attorney in fact
                                      ------------------------------------------
                                      Name:  Peter R. Kellogg
                                      Title: Chairman of the Board

Dated: February 14, 2006
       New York, New York             /s/ Marguerite R. Gorman, attorney in fact
                                      ------------------------------------------
                                      Peter R. Kellogg



CUSIP No. 741113 10 4


                                                                       Exhibit B

                                     ITEM 7

            IAT is the relevant subsidiary for which Peter R. Kellogg may be
considered a control person.