It's 531 tubing like 99.99% of all Gazelle Champion Mondials
The frame and fork weigh 2150 (frame) 740 + (fork) = 2890 (total) grams
A bigger bolt/nut or a slightly larger (than normal bolt flange) diameter ring is needed for the seattube lug, one side of it is dented so a normal sized seatpost binder bolt would not be able to clamp it. I'll have a rummage around in the hardware store to try to find an elegant solution
some questions answered:
It's 531 tubing like 99.99% of all Gazelle Champion Mondials
The frame and fork weigh 2150 (frame) 740 + (fork) = 2890 (total) grams
A bigger bolt/nut or a slightly larger (than normal bolt flange) diameter ring is needed for the seattube lug, one side of it is dented so a normal sized seatpost binder bolt would not be able to clamp it. I'll have a rummage around in the hardware store to try to find an elegant solution
cheers