Great information Argo. I'm not sure there was any question in your posts, so I'll just comment on the one I own.

My first Brit double was an E.M. Reilly 12ga hammerless boxlock extractor model I bought back in the '90s from Bob Deekins who posted it for sale here on this site. It immediately became my favorite quail gun and remains so today.

Terry Buffum, a poster here and knowledgeable about Reilly said it was a very late serial number likely built after 1900. I've always wondered whether The "maker" actually built any of the guns bearing the name or if they were products of the London trade. I don't believe anyone now knows for sure.

Congratulations on finding one that suits you. Shoot it in good health and welcome to the board...Geo