Hello,
Some interesting air pistols coming up for sale at J S Fine Arts Auction on 28th January, including this 'Spring Clip' Mk 1 and possible Lincoln pattern prototype.
https://www.the-saleroom.com/en-gb/a...3-a6f901778c13
https://www.the-saleroom.com/en-gb/a...7-a6f901778c13
Lots of other early Webley pistols etc, so well worth a look.
Regards
Brian