I have a Gipiemme Chainset, 170, free plus post to the man with the project. It is not in tidy condition and I only have one Gipiemme chainring.
As another link to a different item, it happens to be available as I have just removed it from my grass track bike, which I am trying to get in order for the Highland Games meet at Airth, Scotland, this weekend. Professional grass track racing is alive and just surviving in Scotland!
Regards
Martin Coopland