I see. Licensed grey meaning?
Replying to your multiple posts. I think your perception of the lack of supply of watches is incorrect. The supply of watches in the secondary market is always going to be an ocean as compared to a tiny swimming pool of supply from ADs for popular sports watches. Ppl are selling watches bought in 2022/ 2021/ 2020 all the way back to the day Rolex was founded, whereas ADs only sell current models at fixed manufacturing capacity. So you get the idea.
If a grey dealer shop has a lot of stock and a lot of watches, it just means they have a lot of capital or they do consignment business (like watch exchange), it doesn't reflect the demand/ supply of the watches itself. How you see the demand/ supply is the PRICE. If the grey market price of a No-Date sub is the same price as retail, you will start to see them on the shelves of AD for sale.
As to making your purchase, I think Brightime and Chuan have been around for a while now. Just ask them how they authenticate. End of the day, there's no 100% percent sure they are selling you an authentic piece, probably 99% sure. If you are extra paranoid, after purchase, bring it to Top Hour lucky plaza, and pay $50 to the Uncle to authenticate. That should help you sleep better at night.
Most cases of fake watch scams are when you buy from someone through an online marketplace, without meeting a third-party authenticator to do the deal. Have not heard of cases of fake watches from long-standing grey dealers.
Just a word of advice, do some homework on how to compare fake vs genuine Rolex and study a little bit. You will feel a lot more comfortable when you go to those shops, rather than walking in with zero knowledge. Through your conversation with the salesperson when you talk about authenticity, the legit shops will openly share how they check for real vs fake. Anyone hiding info is a red flag.
If you're still uncomfortable, then I suggest you go to the AD route (though is a very off-putting process for new watch collectors). Hope this helps. Good luck with your first watch!