GPO

7 GPO Obliterator - Vertical oval
8 G.P.O Obliterator - Oval 32 rays 

9a GPO Obliterator - Oval 24 rays
9c GPO Obliterator - Oval 29 rays

Duplex GPO and QL Cancellers and Obliterators

Machine Cancellers

Dead Letter Office (D.L.O.)
Dead Letter Office datestamp type 1

Handstamps

Other

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