Crown for Polerouter ref. 204612

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Hi all!

I bought this Polerouter 204612 locally in Norway a couple of years back and I had it serviced this year. I then found out that the movement has been changed at some point. Today it has a cal. 69, but it ought to have a cal. 218-2. I bought a donor watch the other day, so hopefully I will have the right movement in a couple of months. The crown is also wrong, but I have not managed to source one yet.

Does any of you know where I can source such a part? Do you have and suggestions to any European, vintage watchmakers that might have it? It should be a big crown.

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