WW1 era YPRES Silver & Gold Souvenir Pin

WW1 era, YPRES, souvenir pin. Silver metal with gold letters Y P R S (Missing the E) suspended below. The Y P R S letters appear to be Gold (I am told these are 9K gold but have never tested them) three piece, plus the gold letters. Pin back. 30mm x 33mm.

These pins were quite popular with the soldiers and were from the city named but I think many collected them for souvenirs of the Battles fought in that area.

Control #WS7262