small-luxury-world
[Patek]
8725
The differences are in the details (inside) ...
and both are based on two very different movements (as mentioned by Dje before).
Ref. 5204, cal. CHR 29-535 PS Q vs Ref. 5951, cal. CHR 27-525 PS Q
The latter is smaller and thinner and the approach is different - VERY limited production, because of VERY limited resources to do it.
The production of the "smaller and thinner" movement costs about double as the production of the "bigger" movement - at least my guess, when we talk about that level of finish.
One is a "regular production" piece with (only) special order needed. One is only "special order" and comes with an even more difficult process to get.
Marketing only? No, not at all - superior handicraft is the key 
Best,
Oliver
Available on the marketplace
The differences between 5204 VS 5951
Right we've got two Split Second Perpetual Calender Chronographs here: The 5204 (and it's Lemania-based predecessor the 5004) and the 5951. Can someone explain the difference between these two pieces (aside from the obvious about shape and look etc). The ...
Sure!
Hi Murcielago boy, Reference 5951 is based on thinner base calibre, requiring a harder work at producing parts, finshing and assembling them. It is also finished to a higher level, somewhat at the top of what Patek Philippe has done in that area. So some ...
Yours ...
even better :-) Congrats, it is an incredible piece. Please feel free to share more pictures, sentimens and thoughts about your beauty. Thanks! Oliver
The differences are in the details (inside) ...
and both are based on two very different movements (as mentioned by Dje before). Ref. 5204, cal. CHR 29-535 PS Q vs Ref. 5951, cal. CHR 27-525 PS Q The latter is smaller and thinner and the approach is different - VERY limited production, because of VERY ...
5204 and 5951 do NOT DO the same thing: one is a sschr pp, the other more a chr pp
A very interesting question here! The 5951 uses the caliber first introduced in the 5959. As said very thin and threfore with HORRIBLE tolerances for the watch makers! But aside that it has got some much more interesting features: - a continiously moving ...
Thanks to both Oliver & Moritz.........
For your fine explanation regarding the differences. :) Regards Tony PS Personally, I always marvel at how collectors have so much in-depth knowledge :)
And the 5951 is
Also a mono pusher chronograph as well, another important difference. Gary