✅ SOLVED Button ID - date and material

[ATDigger]

Any help on a date or what material it's made from would be appreciated. I thought it might be pewter (dusty grey in color) but it doesn't mark paper when rubbed.
Thanks for looking!

 

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[Ninjafossils]

1800-1830

http://www.daacs.org/wp-content/uploads/buttons.pdf

 

[ATDigger]

Thanks Ninja - great document as well!