@gubhi hi there, sorry for late reply..
I’m the lucky owner of 2 large V1. @swedeee’s ex bike, I got the other one from the first owner, was neon orange originally, unfortunately the guy had it repainted in mat black at some point..
Here attached is a picture of the Medium V1, large medium is what they called at the time the « 50cm »
Meaning that seat tube (A on schema) measure was 50cm C to C
And effective top tube (B1) go to 58cm if I remember correctly
Personally I’m 191cm tall and Large frame fit me great, but before get my frost V1, I was riding a 46cm V2 (still owning it) without real issue..