What time is it? Watches and horology

All three are good obvs, but it depends what you’re looking for.

All IMHO… FOIS is the most vintage looking despite the sapphire crystal and for me has the nicest (and sharpest) case. The 3861 has the chunkiest looking case but also has a ton of depth to the dial that the previous 1861 didn’t. 3861 also has the best bracelet, though it seems a lot of people don’t like the look of it. FOIS wears a little smaller than the others. 3861 is the best movement technically but for some it’s a departure from the classic moonwatch.

Try them all on if you can, you cannot tell the difference from internet pics but they are surprisingly different from each other (and from a vintage tritium speedy) in person.

I agree with @Regal, however personally I think hesalite is the only crystal to have on that watch. I’ve seen some people replacing the sapphire on the FOIS, but for me the 1861 is the nicest. The new one is too modern for me and the FOIS… I don’t know, just didn’t keep it. I would also encourage you to look at the broad arrow… I think it looks pretty sweet.