Right, so it's probably just a 166.0172, not a 168.0061. Nothing points towards it being a 168.0061. It doesn't have the chronometer grade movement, nor the text on the dial.
What made you think it was a 168.0061?
The listing was 166.0061 and it also says it on the inside of the case. An inferior watch? Still worth buying?
The case-back doesn't say 166.0061 anywhere. It is a double reference case-back for the chronometer 168.0061 and the non-chronometer 166.0172. So that case-back can be found on either reference, and you need to use common sense to distinguish between the two. There is nothing about that watch suggesting that it is a 168.0061. If the seller is ignorant about watches, it could be an innocent mistake.
