CANADIAN STAMPS
1946
SG OS15
Official
Special Delivery Stamp
Issued 16th Sep to 5th Dec 1946. Printed perf 12. For these official stamps the 'O.H.M.S' is type O2, punctured with 4 lines of dots to make up the letters. Don't confuse these with stamps that have the 'O.H.M.S' printed on them, this overprint was not used until 1949
SG OS15
10c
green
10c
green