This specific combination of high-value Australian "Kangaroo and Map" (Roo) postage stamps cancelled with a "SHIP MAIL ROOM" handstamp indicates a fascinating piece of philatelic history. It is almost certainly a cut-out parcel piece, a high-value packet tag, or a bulk mail document from a ship leaving Australia in 1932
This particular postage stamp parcel piece is a valuable and extremely rare collectible item for any stamp enthusiasts or for an investment portfolio.
In 1932, a franking of £2, £1, 10/-, 5/-, 2/-, and 2/- Australian Kangaroo and Map stamps represents a combined high-value postal face value of £3 19s 6d (or 79 shillings sixpence).
In 1932, at the peak of the Great Depression, an Australian adult labourer working full-time earned around £3 to £3.10 per week, so £3 19s 6d was about 6 (SIX ) DAYS' WORK
In early Australian philately, high-value stamps on intact heavy brown paper or shipping tags are highly sought after because they prove the stamp was genuinely used for its intended commercial purpose. However, many parcel stamps suffered from heavy, messy ink cancellations or physical damage when the packages were opened. A clean, lightly cancelled stamp on a well-preserved piece commands a major premium
This exceptionally high amount of postage was likely too expensive for a standard surface parcel post rate of the era. Instead, this specific franking likely paid for ar high-value insured packet sent overseas, which could physically weigh up to a maximum limit of 11 lbs depending on the specific international route and service constraints