Watch List notes:

Pair of Experimental Cent Planchets, RB 42-22a and RB 42-22b, Uncirculated Uncertified. Roger W. Burdette, author of United States Pattern & Experimental Pieces of WW-II, has examined and authenticated these two items as zinc-coated steel planchets intended for use in the Experimental cent project within the Philadelphia Mint. Although not listed in Burdette's current reference that was published in 2012, they will appear in a second edition that he is preparing for publication.
Undated Zinc-Coated Steel Planchet, Type One, Intended for Proposed Cents. 2.98 grams. This piece is 10% heavier than the 2.70-gram weight standard for the 1943 zinc-coated steel cents, clearly indicating that this piece is more than just a blank planchet for a steel-cent. A single small indentation at the center on one side provides a quick visual identification of this planchet as a Type One blank. This dull metallic gray item is an important reminder from an incredible period in our Mint's history. Burdette writes that "this item is consistent with testing of manufacturing processes and materials prior to production of cents for 1943."
Undated Zinc-Coated Steel Planchet, Type Two, Intended for Proposed Cents. 3.01 grams. Slightly heavier than the other planchet, and considerably heavier than the 1943 steel cent standard, this dull metallic gray piece has two punch marks that provide quick visual identification of this planchet as a Type Two blank. The two blanks in this lot are the type that were used for Philadelphia Mint experimental cents cataloged as RB 42-22 and RB 42-23, the latter as offered in the next two lots.
A contemporary brown-paper envelope annotated "Proposed one-cent piece" accompanies this lot.

HID02901242017