Deep and Meaningful Midnight Blue 1940s French Casein 6cm Belt Buckle

Like the depths of the sea or the inky blue black of the night sky..this vintage casein buckle is an intense dark blue.
With subtle colour variations that add depth and movement - characteristic of vintage casein plastic.
Each buckle is a slightly different colour.
Three circles on either side, carved like spirals..
The buckle is 6cm tall, 4.5cm wide.
The aperture each side is 4cm tall and 1cm wide.
I found them in an old warehouse I cleared so in excellent unused condition - on their original display card.