Sheet of 12 vintage 4cm tall Mid Century Petrol Blue Buckles

These attractive shimmery petrol blue vintage plastic buckles are 3.4cm wide, 4cm tall and with an aperture that is 3cm tall, each side being 1cm wide.
But they all have rusty prongs - would be easy to get off with pliers.
There are 12 on a sheet, the price is per sheet and I have 12 sheets - perfect
if you're going into production...