I have a vintage belt buckle from around the 1940's - 1950's.  It is in 2 pieces, when together it measures about 1 3/8" x 2 3/8".  The plastic piece which receives the belt is present and will fit up to a 7/8" belt.  The hook is missing on 1 of the pieces and the opposing piece that receives the hook is a bit rusty.  The plastic on the finish outside is 3 layers glued one on top of another.