Thanks Drew, great articles I will have the bores scoped and do some more measuring before I deem the gun safe/unsafe to use. Charles Osborne records have been lost unfortunately so the serial number does not allow one to date it using that. It is a basic gun but it has the Purdey bolt with Scott Lever so The 14 year patent would have expired and the name on the rib does not have LTD on the end of the name which happened in the 1890s, that is how I narrowed down the date