Watch List notes:

Victoria (1837-1901), 'Shieldback' Sovereign, 1871 [Die 30], young head left, WW in relief, rev. crowned shield in wreath, edge milled, 7.98g, 6h (Marsh 55; MCE 531; Spink 3853B), the deftest bagmarks in otherwise gloriously choice fields, a true 'mint state' example, practically FDC.
Provenance
Spink, by private treaty, 27 February 1973 - £35 [with this ticket from M Rasmussen and Mr Tooley]
Estimate: $600 - $1000