I'll bet the church you searched at one time was used as a Korean christian church or some Korean christian missionary's had visited that church? The reason I believe that is one of my daughters was in 4-H, they'd meet in an old church in the country and some of the old folding chairs had Asian writing on the back of some. I asked someone about it and they told me the old church was used as a Korean church in the 1960's. This symbol I'm posting is a sign of Korean Christians for grace and peace in Christ. It is the same colors in the image of a apple or cherry blossom?, but has a hart with cross in the center instead. I'm not all that sure, but feel I'm getting close on this mystery item. I think if you could translated the writing on the center of your pin, that may solve the mystery of your find. It looks like many type pins made of brass and real fired on enamel. I think that would give it an age of before the 1970's. ?? Newer label pins are not made as well in detail today in the same way as in the past.