This is a long shot but...
I recently purchased a Conti Prestina and unfortunately the pressure gauge is not working. I've contacted a number of individuals including stefano and Moschetti (still waiting to hear back) and have taken it to cafe parts in Denver to try to match but have not had any luck. The threads are odd - seems like 1/8" BSP, but it's not quite right. I've soaked my existing gauge in a citric acid bath with no luck.
So back to the long shot - I've seen a few posts of people having multiple conti's that they are rebuilding - any chance anyone has an extra gauge I could purchase from you? Any help would be greatly appreciated!
Pics of the existing gauge:
Used espresso or coffee stuff you hope to sell or buy.