Hi John,

Nice gun you have there, I have a Dickson with the same 'grip safety' as your Perrins, my gun is dated 1863 and is also a pin-fire conversion.

It is a rare thing to come across. Looking through the Dickson records they built 18 muzzleloaders, 24 breach loaders (centre and pin-fire) and 8 hammerless guns with this 'grip-safety'.

Regards
J-PD