Along with two other denominations, the 3d Die3 was overprinted by a ½d to use up stock.

The reasons for overprinting (a frowned on practice by both by printer and philatelists) must have been a combination of both large stocks on hand, and, the need to immediately issue useable stamps. The ½d Kangaroo was used in large quantities at this time.

Quantity: 2,946,080

These overprints were issued for a brief time until the 3½d plate and electro was prepared.

Like most McCracken printings, he did not alter the imprint unless he personally created the electro and these overprints are from the Ash prepared, McCracken printed issue.

Large stocks of 2d and 3d were always on hand, it was natural to use them up as an overprint. The 3d was sufficiently worn that on change of colour, new electros were prepared for its subsequent printing in brown.