@oldpirate posted:Here is one set of a few I still possess from the 1989 Electro Motive Division (EMD) open house, La Grange,IL plant, if I recall correctly my Father (RIP) told me they were stamped from blank forged piston stock
No. Those "coins" were made of powdered metal, which was an in-house process where the "powder" was pressed into the desired shape and then run through the heat-treating oven. Once cooled, they are nice and smooth and required no machining. That process was used to produce precession small engine top-deck "jewelry" parts.
as I rember one could take as many as you wanted from the bins in the tour isles, he would bring blue prints for the locomotives he would be working on and tell me to study them, he was a welder/ fitter, not to mention the Locomotive builder plates he would give me, all in the garbage, very sad, if I only knew better back then, as a kid I went to the open houses as well as the Christmas open houses for employees and their families, miss that period of lost history,
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