Trying to i.d. this Pinarello frame I bought many years ago on eBay and only recently took off the garage wall. Features (from rear to front, more or less):
1. Pinarello rear drop-outs (chrome)
2. Chain hanger braze-on.
3. GP pantos on top of seat stays.
4. Columbus SLX sticker on the seat tube (but I can't detect any rifling inside the ST when looking/feeling through the left side of the BB shell (right side fixed cup is still stuck/seized, so no view/feel from that side). Did Pinarello use SLX for any frame other than Montello?
5. Front derailleur braze-on (chrome) with GP panto.
6. One-piece BB shell, but does not have GP pantos on the top side (so, not a Montello?).
7. Gear cable channels go through the inside/underside of the BB shell (not over the outside through a welded steel or screwed-on plastic guide).
8. Underside of BB shell has "PINARELLO" panto and serial no. 1S 409 (which matches the serial no. on the fork's steering tube).
9. No bridge connecting the chain stays.
10. Right chain stay (only) is chrome; rest of rear triangle is blue like rest of frame.
11. Seat tube and down tube braze-ons for water bottle cages.
12. Shifter braze-ons on downtube.
13. (Unusual) braze-on on the underside of the top tube (for frame pump maybe?).
14. Internal cable routing in top tube ("in" and "out" are both on the top of the tube).
15. "Olympic Champion/Tour de France 1988" decal between shifter braze-ons on down tube.
16. Oval head tube decal with image of cyclist and horizontal colored stripes and words "PINARELLO" and "ITALIA"
17. Chrome fork with painted fork crown and "Columbus" decals on each side; GP pantos on each fork crown.
18. Pinarello drop-outs on front fork.
I've gotten some help on Facebook, with one suggestion that its a Treviso given no rifling and no GP pantos on top of the BB shell (so, not a Montello). Obviously hoping it was a Montello given the SLX decal on the ST, but the more I look at it, I think that decal is newer than the others and was added later (to move it on eBay perhaps?). But then what do I make of the internal cable routing? Did Pinarello use internal routing on frames other than the Montello circa 1989-1990?
Any help is appreciated. Looking to build it up with period Campy components and use it together with my old Cadore. How much I spend on the components may depend on quality of the frame.
