Hi I was hoping for some input on this coin, it's a james I gold hammered thistle crown but seems to have a mintmark bell over key I have researched this but can only find information of bell over key mm on the james shillings and haven't seen any examples of this on a thistle crown , does this make the coin more collectable or desirable plus any thoughts on grade would be appreciated , sorry if the photos are not that good but I'm having a few teathing problems with imaging at the moment any input welcome thanks,ps the double mm is on both sides of coin but due to wear and poor image it's hard to see on one of the images thanks again regards Chris.