62 cm center of head tube to center of seat tube. There is what looks like the beginning of a cut on the steerer tube. It extends 52mm around the 80mm circumference. I put 0.23 mm fishing line in the cut and it just stands a bit proud of the depth of the cut at its deepest. 0.20mm line just fits in. A crude measurement but it’s the best I can do. The bike was obviously ridden for many miles like that. If you are interested, I’ll send the frame to you for the cost of shipping for you to evaluate. You can then send whatever you think it’s worth, remembering that we are a charity. If you value it at zero that’s OK. I just don’t like to see a classic frame scrapped.