My new “trench dial” Constellation with DS&S bracelet

Bought this watch in auction 10 days ago without having seen it “in the flesh”. I spent 3000 GBP and was afterwards afraid that I had gone too high. Now that I have received it, I am pleasantly surprised, and I feel I must post some photos for posterity 😀

It has a “trench” minute track or “rail track” dial and an English bracelet like the one shown in this 1963 UK brochure and mentioned on page 9 of @mondodec’s essay on Constellation cases. The bracelet reveals itself to have been made by David Schackman & Sons (DS&S) and has indeed some presence. Most importantly, it is removable, so that you can wear the watch on a leather strap.

The dial is the most impressive feature in my mind, and the case (which bears Swiss hallmarks) is exceptionally sharp. I haven’t opened it though, so I can only surmise that it’s a 14381 with a 551 inside (though the case is very thin, could it possibly be a 7xx movement?). I’m sending it to Christian (http://watchguy.co.uk/) for a service and I’ll post some of the pictures of the inside that he’ll take.

Here’s the photos, the first comes from the auction house, the rest are mine:

@Peemacgee:
You must be right, it couldn't be a 700-series, really. Hammer price was 2400, with premium etc. 3033.60 GBP.
As to the bracelet, there are only two hallmarks on it, on both clasp ends: The crown hallmark as the traditional fineness symbol for gold and the 18 hallmark for the actual fineness, there is no letter. I suppose that at the time bracelets were exempt from official hallmarks, otherwise the assay office mark should have been there. I found another example in this thread.
This is the other bracelet end:

Thanks, everyone, for your kind comments.

@Edward53: Sadly the bracelet does not fit my small wrist at all, with the watch it has a length of 20cm. But that's OK with me, I have a spare 18k buckle from the 60s left so I'll put the watch on a leather strap. Also, less bling 😀