Carpenters 31st General Convention Guest Badge

This is a badge from the 31st General Convention of the United Brotherhood of Carpenters & Joiners of America held in San Francisco in 1970. T are union labels on the back of the medallions. The top piece has an American Flag on one side, Canadian flag on the other with the Carpenter emblem in the middle. Under that it says UB of C & J of A with 31st General Convention and Guest under it. The medallion on the bottom says San Francisco 1970 with the skyline of San Francisco, Calif and the Golden Gate Bridge over it. The medallion is 1 1/4" across, the whole badge is 5" long.
5% tax if in Virginia . Buyer pays$4.50 priority shipping. I do combine shipping if more than one item is bought, if they can safely be packaged together.