Coil Stamp Start And End Tabs

There is something interesting about the coil stamp start and end tabs regarding their perforation gauge.

For Canadian Bank Note Company (CBN) coils up until 1930, the tabs are the same perforation gauge as the coil stamps for perf. 8 (7.95) coils from perforating wheels.

For British American Bank Note Company (BABN) coils from 1930 to 1935 the tabs are perf. 11 (10.95) from perforating wheels and the coils are perf. 8.5 (8.75) from perforating bars.

For Canadian Bank Note Company (CBN) coils from 1935 to 1948, the tabs are almost but not exactly the same perforation gauge. The tabs are perf. 8 (7.95) from perforating wheels like before 1930 but the coils are perf. 8 (7.85) from perforating bars. (The difference is noted by the perforation holes not being aligned with each other across from each other for the perforating wheels while they are aligned with each other across from each other for the perforating bars.)

For Canadian Bank Note Company (CBN) coils from 1948 to 1969, the tabs are a different perforation gauge from the coil stamps. The tabs are still the old perf. 8 (7.95) from perforating wheels like before 1930 but the coils are perf. 9.5 (9.50) from perforating bars.

Thus, the coil tabs that have been used for coil start and end tabs for Canadian Bank Note Company (CBN) have remained unchanged in their make up with the same perforation gauge 8 (7.95) that started to be used for coils in 1912 and continued until 1969 in the tabs long after the coil stamps were last perforated 8 (7.95) by perforating wheels in 1930.

Perforation Combinations

Coil Stamp/ Coil Tab/ Time/ Printer

8 (7.95)/ 8 (7.95)/ 1912-1930/ ABN/CBN

8.5 (8.75)/ 11 (10.94)/ 1930-1935/ BABN

8 (7.85)/ 8 (7.95)/ 1935-1948/ CBN

9.5 (9.50)/ 8 (7.95)/ 1948-1969/ CBN

Thanks for the information.

Here is an example:



This is interesting in that the coil stamps have a perforation gauge measurement of 9.5 (1948 to 1969) while the blank coil tabs have a perforation gauge measurement of 8 (1912 to 1930) just like the perf. 8 Admiral coil stamps had.

Here is another example:



Look at the top and bottom most perforation holes on the coil stamps on the left. The perforation holes align horizontally across in a straight line. This indicates that a rotary bar type perforator was used to perforate the coil stamps perforation 8 (7.85).

Look at the top and bottom most perforation holes on the coil tabs on the right. The perforation holes do not align horizontally across in a straight line. This indicates that a rotary wheel type perforator was used to perforate the coil tabs perforation 8 (7.95).