Quote:
I remember reading coils were made up from normal perf stamps during shortages in ACSC.
That is true, for the normal stamps made into coil issues. but the stamp on the left is a very scarce ACSC 189a, 1941 mauve 2d with an inverted watermark and special coil perforation.
ACSC 6/74 - "189a". "Stamps with watermark inverted are from a small quantity of sheets used for making up coils. All examples thus have the special coil perforation.
Frank's strip of 4 seem to have the normal perforations, and the piece of paper tape seen at the back I am sure is a coil join, these coil joins occurred between every 20th and 10th stamp, that makes that particular strip of 4 scarce.
The complete list of King George VI coils1938 1d green QE Die II - ACSC 181 - large holes - join above 20th stamp.
1938 2d red KGVI Die II - ACSC 188 - large holes - join above 20th stamp.
1941 1d maroon QE Die II - ACSC 182 - large and small holes - can be seen on either the 20th or 10th stamp.
1941 2d mauve KGVI Die II - ACSC 189 - large and small holes - can be seen on either the 20th or 10th stamp.
1942 ½d kangaroo (watermark) - ACSC 179 - large and small holes - can be seen on either the 20th or 10th stamp.
1943 1d purple-brown QE - ACSC 225 - large and small holes - can be seen on either the 20th or 10th stamp.
1944 2d bright purple KGVI - 228 - large and small holes - can be seen on either the 20th or 10th stamp.
1948 1d Princess Elizabeth - ACSC 246 - large and small - join above 10th stamp.
1948 2d purple KGVI (no watermark) - ACSC 229 - large and small - join above 10th stamp.
1949 ½d kangaroo (no watermark) - ACSC 180 - large and small holes - can be seen on either the 20th or 10th stamp.
1951 2d green QE - ACSC 248 - large and small - join above 10th stamp.
1951 3d scarlet KGVI - ACSC 251 - large and small - join above 10th stamp.
1951 3d green KGVI - ACSC 252 - large and small - join above 10th stamp.
Special coil plates (joins every 20th stamp), and from ordinary sheet stock (joins every 10th stamp).

ACSC 180bj.g) 1949. Wallaroo. #189;d. Special Coil Perforation. No watermark.