Hi folks. I'm trying to identify an old saddle I've got because it's deteriorating and I'd like to get another one. It was a freebie from a user on here but he didn't know where it came from. It's a solid shiny black plastic thing with three holes in the top and is about the same shape as a well worn Brooks B17. The plastic is hard with no padding. Galvanised steel rails by the look of it. On the side on the drops it says ROYAL GT in a circle. I'm trying to work out if it's an old BMX saddle or a 1970's-ish post-Brooks era plastic racing saddle.
These are the best pics I've got of it: