this is the correct reference , however I would suggest that your movt’s original case would not have had a brickwork observatory - so it all depends on how accurate you want to be.
As for this watch, whilst the lugs don’t look too bad, the case is not in good condition (scratches everywhere - and those gouges on the case back - ouch!)
The crown is a replacement, the movt is tired and has different parts including a replacement bridge and rotor. ( that don’t belong together )
And of course the dial is knackered.
£1250 with taxes would be an obscenity for this watch.