Old J W Bottle with Sculpture inside it!

Hi all, can anyone help with the age of how old my Johnnie Walker Whisky bottle is? At least I think it is a J W bottle.

As you can see there is a sculpture inside it. It was done by a German POW after second world war. I inhereted this from my dear grandmother who passed away 2 years ago.

There are markings on the bottom of the bottle, they are:

J.W.
9 O A 7 0
...

If anyone know I would appreciate a reply.
Thanks
Dafydd
Brisbane, Queensland, Australia.