.. The watch is depicted in Zaf Basha's JLC Guide Book, on pg 89 ,
together with some explanations in the chapter,
which I assume, you may know.
Here is the caseback:
- Ser no is a 4 digit no ( 2 numbers erased for privacy), 40 depicts the year
- above the line 1 there is the crown and A ( left) M (right); these are faded & difficult
to decipher because of wear & tear.
- .S.S.&S.=Smith .Stephenson & Son