"OS" in white circles at
top of stamp.
Envelope in White or Cream
laid paper.
White envelope size:
138 mm x 78 mm.
Pointed flap with seal.
Seal size: 28 mm x 23 mm.
1890, APRIL 21: NORTH
SYDNEY CIRCULATING
For
use by the Inspector's Office
Seal size: 24-1/2 mm x 20-1/2
mm.
White and Cream envelopes
with different headings.
Envelope in Cream.
With black and red obliterating
bars for general public use.
Left envelope seal size:
28 mm x 23 mm.
Right envelope seal size:
24-1/2 mm x 20-1/2 mm.