This piece is a Masonic Chapter Penny that was once belonged to a member of the Ulster Lodge, probably located in Belfast, Northern Ireland. For centuries Masons have carried these tokens as, shall we say, a low tech form of identification to other masons not of their lodge. I don't exaggerate when I state that a huge variety of these tokens exist. I collect those of my city (NYC)and have about 25 or so. I have another few from other places mainly for the busts of famous persons that or on them i.e. Thomas Edison and Lincoln. There are many little towns which have had no reason to produce a token of any sort but will have a chapter penny of their Masonic lodge.There's a volume by E.A.King listing over 10,000 and I believe he covered mainly the U.S. and CANADA. I don't think they are issuing them as much as they once did.