A.500 censor marker number 5694

[Ross Debenham]

I attach a scan of an envelope from a known member of 25(EA) Brigade censor using Type a.500 censor marker number 5694 and triangular Indian field censor marker number 60 known to have been used in Ceylon. Envelope received at Naivasha in Kenya on 18 September, 1943. By this stage 25 Brigade was in Ceylon. Could any member please help me with the location of a.500 censor marker and significance of rubber stamp 474 on the reverse of the envelope.