Any info on this de Rosa track one? Thinking of buying it but only seen it once on Viviani’s Tokyo olympics.

https://m.youtube.com/watch?v=xeCiKmdvFrs

What do you want to know, because just one search on any search engine gave me this. 

Hello, my friend has one, not sure he would want to sell it, I can ask him tho. I think its a 52cm