Here's something I posted 5 years ago. I'll try and see if I can find my source material (and maybe update the graph). Take note that since this was 5 years ago, none of the movements for the P.9000 series are the clone level type.
When buying reps, and even watches in general, the usual questions arise, like "How big does the PAMyyy look on x.xx inch wrist?" or "How does PAMyyy compare to the PAMzzz?" Usually those are answered by photos which demonstrate the actual and relative size and height of the watch in question. But usually, the question, "How much does it weigh?" is almost never answered definitively as wearers tend to differ in tolerance for weight differences due to musculature. Unlike dimensions which are easier to determine even with differences in visual acuity. Plus with the differences in the material used for the reps, it is important to know whether a PVDed stainless steel model would be equivalent in weight to a ceramic gen for example.
So with the aid of a scale (with acceptable tolerances), I measured a sample of the reps in my collection. Weight measurements are head only, as not all PAMs have bracelets and bracelets and straps differ in weight based on composition and length. For example, if I wore a bracelet sized to my 6 1/4" wrist, it would weigh lighter than one sized for 8", the same logic goes for the leather strap, which may not only differ in length and width, but also the thickness and density of the leather, depending on the hide (calf, shark, crocodile, etc). I did measure the lug bars, since they were off when I removed the straps/bracelets anyway and even found an interesting fact. The measurement was done somewhat systematically, the scale was zeroed at every measurement, with each object being measured 10 times and the average of the 10 measurements calculated. It should be noted that while this was done repeatedly, the weight did not change even once, owing to the measuring equipment's regular maintenance.
So here are the results:
Findings:
1. As expected, the 44mm Automatic Titanium PAM089 was the lightest of the group and the 47mm Automatic Bronzo PAM382 was the heaviest.
2. The 1950s case is heavier than a similarly size Bettarini case (PAM531 vs PAM299)
3. The ceramic PAM438 head is as heavy as a steel manual wind. Considering it has an auto movement and uses a heavier 1950s case (finding from
#2 ) indicates the material is lighter than steel, but not as light as titanium.
4. Not all Titanium reps weigh the same (PAM371 vs PAM364). Although both watches are made of Titanium, they differ in weight. This is not at all unexpected as gens also exhibit the same difference in weight. The construction of the bezel is different (with the 364s being beefier) so it would logically explain the weight gap.
5. The PAM438 ceramic bracelet is lighter than the SS bracelet of the PAM299 as expected.
6. DLC seems as though it almost does not add anything to the weight of steel (PAM594 vs PAM602). This is not definitive though as the dial construction is slightly different.
7. (Not shown in the graph) Lug bars actually differ in material. The ones included with the PAM382 is much lighter than the ones included with the similarly constructed 47mm submersibles. Same with the PAM089Es compared with the ones from the PAM602/PAM594. So factories even go so far as to replicate even the lugbar material, interesting.
8. However I seem to have differing lugbars on my PAM299 (one is Ti weight, the other is SS). I will look into my other reps, I might have switched them.
Enjoy reading.