I’ve just bought one of these from Bicyclist for my trek 8700 and did think that it would be a good temp option for my new build. It’s a 92 Roberts Dogs Bollx so I wanted something a bit higher end. To be fair these Uno stems are pretty decent and it’s also fairly hard to find a 1 inch stem that isn’t 140mm long etc. May get one to get the build started and see what comes up in the near future.Not as chi-chi as the ones you mentioned, but flat, 90mm and NOS:
https://bicyclist.cc/product/kalloy-uno-1-quill-stem-silver-90-deg/