Help me check a birth year watch

It's an interesting watch, but it is absurdly overpriced. Many of those Japanese sellers list watches they don't actually own. If someone buys the watch, they go and buy it and then ship it so you. What year are you looking for?

I'd also have a look on Chrono24, possibly for the same watch.

When I bought my 166.010 three years ago, various sellers in Japan had it on eBay as a BIN for £1,000+.

They didn’t have the watch, which they’d have acquired after I purchased it, just as @Dan S suggests.

The actual seller had it on Chrono24 for £561. I was just lucky.

I don’t personally think that is a redial but as you say the min markers are a worry.

Oh and it’s double the price it should be.

Nice references, but nothing particular rare or special. There are often a large number of dial variations, and some are more common than others, but generally that doesn't really affect value.

Every watch you have listed is at least double what I would pay. Some are in nice condition, but the last one seems to have a big spot on the dial, which really hurts the value.

Seamasters from this era are common on the market, and it will always be easy to buy overpriced examples. So I would suggest slowing down and following some auctions and forum sales listings to get a better sense of value. Unless you're in a hurry and don't care about money, in which case just go ahead and buy one.