It's a Nuovo Record with a Rally cage. Shifting is pretty much like any NR and I'm not satisfied with that. I'm looking for an early Chorus medium cage with the AB setting. I thought I was going to win one on eBay for $42 yesterday, but I got sniped in the last 5 seconds. I bought a Huret Duopar, but I thought it was too ugly for my bike and sold it without mounting it.