FREE LOW SEAT! (But I want your standard one)

[know your limitations]

There is one on fleabay at the moment, might be worth a bid Item number: 190703546981

Cheers for that Dazza.
I've had a look and I'm not convinced it's a standard seat. It looks almost identical to the one I want to swap, the angles leading to the top of the seat don't look steep enough to me. Shame he hasn't got more pictures of it.
I'm gonna see if he can do some more...