Tank gunsight - WW2 (Info request)

[Marmot1]

I recently found in Poland British WW2 era gun sight (incomplete) I am looking for info about it: No.33 Mk.II S

From what i found it was installed on British tanks i.e. Churchil


My gunsight is marked:

No.33 Mk.II S
A.K & S 1942
O.S.763G.A. No29235


Any info or photo anyone?

[Linedoggie]

I recently found in Poland British WW2 era gun sight (incomplete) I am looking for info about it: No.33 Mk.II S

From what i found it was installed on British tanks i.e. Churchil


My gunsight is marked:

No.33 Mk.II S
A.K & S 1942
O.S.763G.A. No29235


Any info or photo anyone? If you found one dont you have a Photo of it?