Double Tournois In Brass 1639 - Coin Community Forum

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Author	Replies: 4 / Views: 1,428
tamarin Pillar of the Community Canada 576 Posts	Posted 04/04/2019 06:51 am It's rough but definitely brass. I don't know much about the series but all the coins I've seen seem to be made of bronze. Is this coin an outlier or just another common item from that era? Appreciate any comments. Report this Post to the Staff

DBM Pillar of the Community Canada 9863 Posts	Posted 04/04/2019 10:08 am I believe they should be copper, not bronze nor brass. Did you have it XRF tested. "Dipping" is not considered cleaning... -from PCGS website Report this Post to the Staff
tamarin Pillar of the Community Canada 576 Posts	Posted 04/04/2019 11:35 am DBM, thanks for the info! I've had quite a few of these - mainly rough - in the past and this one came out of a group of maybe 30 coins. I had a collector look through them and he told me I should get this one checked out as it does appear to be brass with its yellowish colour underneath any patina or surface discolouring. I'll have to get it tested for metal content from someone who knows what they're doing. That wouldn't be me. Report this Post to the Staff
SPP-Ottawa Moderator Canada 10456 Posts	Posted 04/04/2019 2:01 pm Quote: It's rough but definitely brass. After working with Chris Faulkner for his token research, and using the XRF in my lab at work - if we learned anything, colour should NOT be used as a criteria for differentiating copper versus bronze versus brass. "Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert Oppenheimer Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US My eBay store Report this Post to the Staff
tamarin Pillar of the Community Canada 576 Posts	Posted 04/04/2019 7:14 pm SPP, you're right. Colour is deceptive. I'll have to get someone to look at this one. In a group of similar era coins it definitely stands out but that doesn't mean it'll be different. Report this Post to the Staff
	Replies: 4 / Views: 1,428

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