That is a great button! It would make a great addition to the 3rd Regiment Artillery Button and the 15th Regiment buttons from the same era that I posted on Tuesday:
http://www.treasurenet.com/forums/todays-finds/289355-15th-regiment-button-3rd-regiment-artillery-button-another-wax-seal-more.html
I would think there would be more of an interest in these types of posts, but it seems like lately the users on this forum are more interested in seeing a nice shiny 1963 Rosie. Maybe it is the new format. I'm just saying.