Holy crap what a pile of rare stuff.
I’m very close to that area.
I went there and looked at the parts and this is just a drop in the bucket of what the guy had collected!!! Please be aware the copper heads are new but they don't have the water manifolds with them so they are only wall hangers.
Someone is reproducing the.
The outer halves of the two-piece 21-stud type heads are being reproduced.
I haven't found the water manifolds for this type of head being reproduced, though.
Reproduction bronze water manifolds were developed 2019 by Keith Tardel (Rex Rod and Chassis, Johnson City, TX) in cooperation with Tom Bandoni.
I know Keith made a set, but is he selling them now?