A job lot of 6 pieces.
B7G Valve Holder (Socket).
Probably British origin though no makers names / marks.
White Low-loss (e.g.for VHF/UHF use) PTFE moulding, with lugs for chassis mounting and side skirt to suit screening can. Contact springs are probably silver-plated.
Superb looking "Vintage" part in clean condition but with some surface tarnish on the skirt due to many decades of storage, will polish out if you require it "shiny" !
This sale is for all 6 as one job lot.