1888 - 1891 DEPARTMENT OF PUBLIC INSTRUCTION
 

The words "Cadet Corps" on heading.
Mint envelope. Curved flap with seal, 57 mm deep.
Envelope size: 228 mm x 98 mm.
Public School Savings Bank
Curved flap, 57 mm deep,  with seal as above illustrated example.
Envelope size: 228 mm x 98 mm.

1893, FEBRUARY 27: BALMAIN to SYDNEY
Cancelled with "1516" oval barrel duplex, dispatch postmark on verso
alongside same day SYDNEY receiving postmark.