[Wendymott]

When I worked at Bradford Uni in the 70's..... we had a visit from a Rep.. I think from Vero who had some interesting samples..one was a 300 x 300... 0.1" pitch with a plain copper topside with the normal strip underside. He gave us 2 boards for evaluation. Great for RF and other critical circuits. Unfortunately Vero did not continue this product.
I still have the remainder of the "left overs".
Although I use pcb for all my construction now.. its there... just in case