I have 2 vintage G.S. Holloway, Imperial Works, Vesey St., Birmingham catalogs. I'd guess between the wars. No phone number, just - Telegrams "Shooting Birmingham".

Post a photo and I'll see if I have the catalog page. I'll be happy to scan and post.

The catalogs are nice, tied together with green string. But no copywrite data or publishing date I can find.

The catalogs offer replacement Sir Joseph Whitword barrels for 15 gbp. Fitted ejectors were 9 gbp

Joe