Anyone seen this before on a watch. From my Japanese colleagues it is a import duty paid sticker that was used in 50/60's. Also, the patina on the medallion is not something I have seen before. Usually, glossy all over but this has matt background with shinny details.
That looks like a stunning piece. Look at how the lugs blend almost seamlessly into the case. Polished examples of this have the lugs sticking out from the sides of the case.
Cheers for the offer @harrymai86 the jumbo constellation references I am looking at are 14777 and 14395, thanks