I have passed several hours looking for this part.
The datapoints are:
1. That this fairing is held in place by only four fixings. Which must mean a low speed aircraft.
2. Inspectors stamp is SSMCS – this has resulted in searching for all aircraft manufacturers and suppliers beginning with S.
3. The part numbers includes A27
4. The paint scheme suggesting military use in the period 39 – 42.
I checked SLINGSBY Sailplanes – but their inspectors stamp is SSK.
I checked The SARO A27 London but there is no forward bulge.
I have spent some time looking through Simmonds Spartan Aircraft. The only one that comes close is the Spartan cruiser MkIII which evolved from the SARO mailplane A24. All others had unfaired fins. But there are no good images of the tail and only three were made – two crashing at Largs and Blackpool and a third impressed into RAF service in Feb 1940. G-ADEL which became X9432 and was joined by two Cruisers IIs in RAF service
X9431 Spartan Cruiser II
X9432 Spartan Cruiser III
X9433 Spartan Cruiser II
Mentioned as being used by AACU’s at Ringway and SOC July 1940.
Anyone with Spartan knowledge know their part numbers or inspectors stamp ?
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