You (or Mollier)* just have to prove it now. All those missing marks!! Even Birch's '21' is bizarrely written - it could be '10' & '11'.
So--get to it. Prove those missing marks are really missing.
*EDIT to add: Should read Monnier.
Edited 2 time(s). Last edit at 17-Jun-18 11:44 by Scott Creighton.