Greased Filled Dies - Questions About Grease

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Author	Replies: 6 / Views: 1,414
ijn1944 Bedrock of the Community United States 19144 Posts	Posted 08/21/2022 3:21 pm Nearly all of us are familiar with greased filled dies and the characteristics of struck-through grease. Questions -- What is the composition (in general terms) of the grease? Is the grease used in the mechanical components of the striking chamber, and then somehow gets on the die(s)? Are the dies themselves covered in a preservative grease-like substance, and mint workers occasionally don't remove all the preservative before coin striking begins. Other? Report this Post to the Staff

Yokozuna Pillar of the Community United States 4618 Posts	Posted 08/21/2022 4:05 pm ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! Report this Post to the Staff
ijn1944 Bedrock of the Community United States 19144 Posts	Posted 08/21/2022 4:17 pm Report this Post to the Staff
Spence Moderator United States 34397 Posts	Posted 08/21/2022 4:32 pm @ijn, this previous thread from north of the border might be of interest: http://goccf.com/t/372300 Added: http://goccf.com/t/279300 This one too, although I'm not sure that everyone is talking about the same exact product. "If you climb a good tree, you get a push." -----Ghanaian proverb "The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz Report this Post to the Staff
airgem Valued Member Australia 369 Posts	Posted 08/21/2022 5:15 pm In the printing industry grease is used to prevent rusting of the dies when in storage. We would use kerosene to remove the grease when preparing the die for use. Sometimes it hardened and had to be picked out of crevices. Not sure if this method is used in coin production but I would assume so. Report this Post to the Staff
ijn1944 Bedrock of the Community United States 19144 Posts	Posted 08/21/2022 5:33 pm airgem -- Thanks. I like the notion of picking hard stuff out of crevices. Spence -- Thanks for the links. The first link's image looks like metallic ear wax. Edited by ijn1944 08/21/2022 5:35 pm Report this Post to the Staff
T-BOP Rest in Peace United States 18456 Posts	Posted 08/21/2022 5:51 pm Good question , I never really thought about it until now . I wonder if the greased coins still retain that grease while in the hoppers or do all coins get like an acetone bath and dried before leaving the mint ? Report this Post to the Staff
	Replies: 6 / Views: 1,414

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