Hi,
upfront, maybe it's just me, but I do not get an image in your post displayed.
I also don't have an exact date, but to me DP22 haven't been shown till mid to late 90ties.
Rigida had DP18 for RR already early nineties (~92-93), while the first bikes I do recall factory-equipped with DP22 had been in the Centurion line up for 1997 like the Backfire Areo and the Pro (the latter in combination with Formula Disc brakes and hubs):
But XT M737 hubs start in 94 and was produced to 98. Only if we find that rims on some catalog bike from 94 we can be sure. I'm afraid that they are late...These are built up on some 1994 model year XT hubs - Rigida 'Ultimate Power'
View attachment 806757
View attachment 806756
My pair is silver rims built on dame LX hubs so we can conclude that the rims are made not before 95/96.I do like DP22, despite of the big to heavy weight (and do love FIR Polar or Gipieme Tecno M416).
I have a polished wheelset with Hügi Hubs, and had an earlier one with black or rather brown-ish DP22.
The brown one came with black LX 563 (front) and 565 (rear) Hubs.
View attachment 806877
(sold meanwhile, better not question https://www.mtb-news.de/forum/t/lrs...ischer-brauner-variante-cosmic-sunrise.949840)
Just pulling those out to provide another index for dating, from what I do know, the LX565 was just available 1995-6.