1888 ISSUE

"OS" in Black on 1888 Jubilee issue.
2p Blue on White laid paper, with pointed or curved flap.

Envelope size: 138 mm x 78 mm.
 
"N.S.W." in three concentric ovals.
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"N.S.W." on front and "G.P.O." on verso,
both in three concentric ovals.

Curved flap envelope with "SPECIMEN" overprint.
For use by the Medical Board of New South Wales
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 Pointed flap with seal.
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Envelope size: 120 mm x 95 mm.

UNRECORDED SIZE

Unless otherwise indicated all illustrated envelopes with pointed flaps.