Thanks for the replies lads,

I had it under the glass and I can't see any makers mark, It does look similar to the belt pistol in the link, but has more detail
I've googled Manstopper and it does look more like them as they have same sort of detail?

Thanks for the valuation, I didn't think it would be worth that much, need to decide now if I want to sell it or not?

Many Thanks,

Rob.