Hello all.
I have a 1971 GTV 1750 with a hide interior. The seats were torn along the perforations when I bought it in 1984, suggesting that the materials did not have a long life span. The car went into storage for fifteen years and I carried out a restoration in 2007. The seats were a real problem although the door cards were okay. I also stumbled on the Espada connection through Matt at Re-Originals in Texas. I sent him a vector graphic of the pattern which I measured and drew using Adobe Illustrator. I probably have that on my old computer is it useful to anyone. In the end, I made a jig out of drilled sheet steel, sharpened two hardened punches into square ends and punched the leather myself over a block of hardwood. I then had these repair pieces sewn onto the original covers. You have to be very patient but it can be done. I will take some pictures and post them once I have sent this post off.
Good luck with your restorations,
Michael Findlay
Port Chalmers
New Zealand