MGOOF : Modern groupset on old frame

yes

That is exceptional. Wonder what the tubing is, sl(x), thron?

I wouldn't consider a steel frameset without a sloping fork crown and fastback or wishbone seatstays, this is nice.

Looks a size too big for the rider, unless a couple of decades of compact frames have warped my eye

Stunning build. Are those TA rings?

So very good, proportions just so.

For horizontal top tubes, 56 cm or 58cm is the Goldilocks zone, neither too big nor too small