Obscure Baseball Pin or Button, 1894 Balto Champs

[threefortytwo]

Hey folks, new guy here, name's Brad, 30yo, Maryland, referred to this forum by Robert Edward Auctions.

I metal detect with a group of friends, and I'm posting this for a hunting buddy. This button was found in Baltimore. We think it is silver, but not positive.

We can't find any other examples on the market and we think it is probably quite rare, or possibly one of a kind. As an O's fan, it's a find he will keep and cherish, but for insurance purposes, trying to get an idea of value. Here is another Baltimore champions button, a little later:

http://www.robertedwardauctions.com/...2011/1325.html

Thank you for any assistance. Mods, please move this thread if necessary or let me know if any problems. Newb.

Best,
Brad