For Sale: Eddy Merckx Frame set 61 cm

Simplex, 61 versus 59cm - would you really know the difference?

Just asking, I am looking and looking for a 60cm, and wonder every time I see a 58, 59, 61 or whatever... but for some reason I have got stuck on the idea of a 60cm.

The frame here is not a 61 but a 59 or maybe a 60 as Merckx frames were made c-c and not c-t. With a 58 top-tube it could be either.