Got this last Sunday and still no idea on origin. It's about 20 mm dia. and has three letters visible under the figures. Could be either RNO or RNC or BNO or BNC. Appears to be a man bearing a standard and perhaps a musket at his side or a lady kneeling with an outstretched hand. Appears to be pewter with a small rectangular shank base on the back but no shank. Thanks in advance for any help!