brass models

Hi All,
As I understand it they were not all just bakelite,
In the 70’s when researching a crash site, we came across a local guy who was, I think with the ROC and he had a collection of about 50 or 60 , brass models that he had not thrown away at the end of WW2.
When discussing this at work, with an ex Raf Lanc Flt Eng, he recalled that ground crew used to make them when their aircraft were out on ops, as a pastime, as they made many other things.
An Ex RN guy told me on convoys the tiffies made many items to pass away the time.
I have a large brass spitfire, I got in the 70’s but never really got into collecting them.

A link to a site with info on metal models
http://www.mikes-tanks.com/AuthenticastAir.htm

just been reading a few search links, and it some say the original mould masters were made of brass.

But still at £77 it would have been out of my budget.
anyone know what the others went for ?
Cheers
Jerry