Going through my accumulation and doing a lot of re-photographing and came across these.I actually have two pairs of them;one I got about 40 years ago that isn't in as good a shape as these. Souvenirs of the Phillipine Islands they are made entirely from water buffalo horn. Bot too good for cutting but make an interesting wall display. Background is as usual a grid of 1 inch(25.4mm)squares. Some mighty big buffalo gave these up.