Breguet 5907: 510 vs 511

 By: Jimty : April 18th, 2022-13:08
Hi all

I’ve been reading up on a few watches that have caught my eye, one of which is the Breguet 5907. As understand it the 5907 was made with two movements: originally it came with the Cal. 510 and later with the Cal. 511. The main differences between them seem to be:

1. 95-ish hour power reserve on the 511 vs the 72-ish hour reserve on the 510.

2. Flat bridges on the 511 vs the “scooped” bridges on the 510.

3. 28,800 VPH on the 510 vs the lower 21,600 on the 511.

4. I’m assuming there are fewer watches in circulation with the 510 vs the newer 511.

5. The crowns are larger on later models, but this seems to be an upgrade that Breguet will undertake when the watch is serviced.

So the pros of the 511 seem to be the neater aesthetics of the flat bridges and the greater power reserve, with the pros of the 510 seeming to be (theoretically) greater stability / accuracy due to the higher VPH and (presumably) greater rarity.

Is that a fair summary, or is the 511 superior to the 510 in other ways (or vice versa)? Put another way, if choosing a 5907 would you always choose the 511 over the 510 and if so, why? I’d appreciate your thoughts.



Welcome to WPS, Jimty!

 By: Spangles - Dr. Tabby : April 19th, 2022-02:32
I hope you enjoy this place as much as I do.

That's a lovely Breguet you are looking at. It's been out of production for some time, but if you google it, you'll find a few posts here on WPS about it.

One of those threads discusses the movements. The earlier one is said to be a JLC movement, while the latter is an F. Piguet, a brand that would become the movement maker for Breguet and its sister brand Blancpain under Swatchgroup (along with Lemania).
I like F.Piguet movements, so I would go with that one. The F.Piguet is perhaps jeweled a bit more robustly, however, I don't think there is a real advantage the way you seem to be trying to compare the two. You would be well advised to rather consider the quality of the watch in front of you in terms of condition, as well as simply the trustworthiness of the seller. You may have heard the idea "buy the seller" and this is good advice.

If you do buy a Breguet, I think you'll enjoy it a lot. Remember to take a few pictures and share them with us here!

Thank you! Breguet 510 vs 511

 By: Jimty : April 19th, 2022-08:19
Thanks Dr. Tabby - much appreciated, and “buying the seller” is sage advice.

Regarding the movement, that’s the first I’ve heard that the 510 was from JLC - I’ll certainly look into that more closely, as I’ve also read that both the 510 and the 511 were modified versions of the FP 1150 but also that the 510 was based on the FP 1106. The plot thickens….!

I’ll be sure to share some pictures down the line and thanks again for the reply.

All the best,