EXHIBIT 10.17(4)

January 29, 2004

Technitrol, Inc.
1210 Northbrook Drive, Suite 385
Trevose, PA  19053

AMI Doduco, Inc.
Murray Corporate Park
1003 Corporate Drive
Export, PA  15632

Gentlemen:

Upon your acceptance of the terms of this letter agreement as evidenced by your
execution and delivery to Fleet Previous Metals Inc. (the "Consignor"), on or
before the date hereof, of a copy of this letter, Technitrol, Inc. and AMI
Doduco, Inc. (f/k/a Advanced Metallurgy, Incorporated) (collectively, the
"Customer") and the Consignor agree, effective as of the date hereto to amend
the fifth sentence of Paragraph 1 of that certain Consignment Agreement dated as
of November 18, 1997, by and between the Consignor and the Customer, as the same
may have been heretofore amended (as amended, the "Consignment Agreement"), to
read as follows:

            At no time shall the value of consigned commodities exceed (i)
            $30,000,000; (ii) such limit as the parties may agree upon; or (iii)
            such limit as Consignor may approve in its sole discretion
            ("Consignment Limit").

Except as amended hereby, the Consignment Agreement and all agreements securing
the Consignment Agreement shall remain in full force and effect and are in all
respects hereby ratified and affirmed.

                                           Sincerely,

                                           FLEET PRECIOUS METALS, INC.
                                           Consignor


                                           By:   /s/ Richard M. Seufert
                                              ----------------------------------
                                                   Richard M. Seufert
                                                   Senior Vice President



                                                                EXHIBIT 10.17(4)

Technitrol, Inc.
AMI Doduco, Inc.
January 29, 2004
Page 2


ACCEPTED AND AGREED AS OF THE
29TH DAY OF JANUARY, 2004.


TECHNITROL, INC.
Customer


By:      /s/ Thomas Considine
   ---------------------------------------
         Thomas J. Considine, Jr.
          Vice President and Treasurer


AMI DODUCO, INC.
Customer


By:   /s/ Thomas Considine
   ---------------------------------------
        Thomas J. Considine, Jr.
         Treasurer


The above signatory has the authority to execute the above amendment on behalf
of Technitrol, Inc.


TECHNITROL, INC.


By:     /s/ Drew A. Moyer
   ---------------------------------------
         Drew A. Moyer
         Secretary

The above signatory has the authority to execute the above amendment on behalf
of AMI Doduco, Inc.


By:     /s/ Drew A. Moyer
   ---------------------------------------
          Drew A. Moyer
          Secretary