The Cambrian check I bought for my Fakes reference collection off E-Bay recently was a soft solder like metal with no brass veneer and was poorly pressed and ragged round the edges.
It is the first time I have seen this version of Fake, so it is another variation of Fakery, although I would think it was done many years ago as reported in the previous posts on the item.

You say that this check has been pressed out, to do
That you will have to have a die made, the cost of
The die done on C.A.D. will be £600, and these
Checks go for £10-20 , for the Lancasters you say
That the front is a thin veneer of brass, so you will
Have to make up 2 dies, cost £900 .
Then there is the coining press, at leased 20 tons pressure.
Cost £30,000 …. Sorry does not make sense at all.

EJH, you know little about collecting checks. The big John Lancasters are well known amongst collectors and have been around many years. There was no such thing as CADCAM in those days and if selling fake checks did not worry the makers, then using engineering facilties for free would not bother them either. The Cambrian that came to light recently was done many years ago also. The aluminium cwmcarn checks pressed on open days for kids at Welsh Museums are also long known about, as are Pope & Pearson small round, Dartmouth and Yorkshire Main, North East brass rounds (the dies for these came up on E-By a couple of years ago and were bought by a reputable reproduction check maker who embosses his checks as reproductions and sells them as such), etc etc. Just look on this NMMA site for lists and details of known fakes.
Many Men speak little and say a lot, some Men speak a lot and know little – you are in the latter category. Or put another way – put brain in gear before opening mouth!