EAST AFRICA 1943.11.24 AMLC from R N Barracks Kilindini- water-stains - label ".. recovered from the sea..."

EAST AFRICA 1943.11.24 Air Mail Letter Card from R N Barracks Kilindini
- water-stains
- black/white label affixed on back by GPO Mount Pleasant, London:
"This Airgraph {deleted} Air Mail Letter has been recovered from the sea but it is not known in what circumstances it came to be in the sea/ Returned Letter Section/ Mount Pleasant E.C.1.
{imprint} R01154C3/44 5m/".
Scarce label. Not seen before by me.