SG O123/ACSC 141(OS)zL:
2d carmine-red, overprinted OS, ASH IMPRINT PAIR. Cancelled to order - small Melbourne GPO cancel,...
$1,750.00
SG 139a(var)/ACSC 144(OS)zd: 6d Airmail
6d Airmail 'OS' Imprint strip of 3. Very fine mint unhinged.
$175.00
SG 0124/ACSC 142(OS)z: 1931
3d Kingsford Smith OS overprint. An example of the PLATE No 1 corner block of...
$1,650.00
SG O123-O124: 1931
Kingsford Smith OS overprint, set of 2. Cancelled to order.
$85.00