More on Ed's Scott 10 bore: Observations:
-- Purdey Pat 1104 use number 4377. You can't date a gun by a Pat use number, at least consistently. However Pat 1104 expired on 01 May 1877 which puts at least a maximum date on it. (So Scott stamped Purdey's Patent on his guns presumably paying for it; wonder if Purdey paid Scott for using his spindle?)
-- WC Scott & Son Makers Patent Action. Not sure which Scott action this refers to but it's pretty ubiquitous on Scott guns.
-- There is one other patent stamped on the lump. "CSA? Nr 1 -28? Patent"? Can't make it out from the photos. Any hints. eeb can you see it?
-- Scott SN is 5220. It would date to 1874 per this chart:
https://doublegunshop.com/dgsnos5.htm

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