The listed variety is "QO" QOeensland instead of Queensland. It occurs as the 48th stamp in the first plate and was caused by the electro sticking to the matrix, tearing away a portion of the raised surface. A second plate was made in 1880 and this variety occurred in position no 44. A third plate was prepared after March 1881 and there is no trace of the "QO" in this plate.
A QO example on a burele band. Ex Manning
Another QO example
An incredible number of QO varieties, from the collection of Carl Burnett
And here is a montage of many of them!
One more QO from Carl Burnett
Watermark 2nd crown over Queensland. Dated 8 June 1882. Seen at Premier Postal auction no 73
Seen at Premier Postal auction no 52
Seen at Premier Postal auction no 51
Watermark 2nd crown over Queensland. Seen at Premier Postal auction no 54
Seen at Phoenix auction no 8
Seen on Ebay
SG13ab SG 134ab WMK6 print error Q"O"EENSLAND. From my collection
Qoeensland. Seen on Ebay
2 more examples of Qoeensland. Seen at Prestige Philately auction no 152
Qoeensland. From the collection of Carl Burnett