1888 ISSUES

New stamp design.
"OS" at top and bottom of stamp with white background.

1p Brick Red on White.

Envelope size: 138 mm x 78 mm.

Mint envelope.
1888 NEW DESIGN

"OS" in white circles at top of stamp.
Envelope in White or Cream laid paper.
1p Violet Sydney View.

Pointed flap without seal. Envelope size: 138 mm x 78 mm.
"Specimen" on Cream envelope.
"N.S.W." in three concentric ovals.
"G.P.O." on verso, showing partially on back flap.

For use by the Medical Board of New South Wales

Pointed flap without seal. Envelope size: 120 mm x 95 mm.