There are relatively few pics of this frame out there on the web, and it's a weird one for sure. It was made as a kind of city bike built around 26" rims. It is very similar to the 830 from '84. The front fork is much narrower at the crown than the fork on the 830 and it has adjustable horizontal drop outs instead of vertical drop outs. It also uses a clamp-on cable stop on the down tube. Other than those things it's the same as the 830, same tubes, Reynolds 501 AT, and same style of decals and placement.
As I got it:
Twisted SR crank is original
The long drops w/ really messed up adjusters:
Nice pointy lugs:
The cable stop:
I believe the Stronglight headset is original:
Cheapie "EM" Shimano shifters
The strange fork:
Interesting old tires. I think the same tire is just called the Pasela now. This is a 1.5"
Looking up to bummer city. I've never seen that before! I guess that this is seamed tubing and that the crack is on the seam. Thankfully it was cheap, but it's always sad to see a cool old bike broken like that.