Lot P4666 Registration labels

1941 censored cover sent registered air mail to Bombay with, on the back, an India 3ps and Kuwait ½A and 6As cancelled EXPERIMENTAL P.O. K-79. 6 SEP 41. An EXPERIMENTAL P.O. K-79 registration label is on the front of the cover. The cover, which has been trimmed about 1cm at the left, has censor tape that is tied by triangular violet ‘PASSED BY CENSOR C 23’ handstamps. Bahrain24 SE and Mandvi, Bombay, 1 OCT 41 transit and arrival cancels are on the back of the cover. A rare cover with this canceller and registration label