I saw white frame and thought 851 but it looks more like an SS Superlight.
Looks good.
Thanks, I've got more work to do but it's getting there. It's a 900ss but not a Super Light. Super Lights (in the USA) had different (two piece) wheels.
I sold my 851 to get that Super Light. The 851 is one of my favorites but so is the Super Light so when one came and found me I had to make a choice.
'91 (and '92?) Super Sports also had white frames. And white wheels. But this isn't one of those either.

Somebody powdercoated the frame white before I bought it. When changing the tires I decide to go all in on the (much more better) early look, so it looks a little different now.