newbie hear, i was directed to here to seek some answers. i am told this is a px10, did the research and have all components of a factory bike. serial # bb is 72745. i have attempted to upload some pics for ur viewing.

Picture of the overall bike if posable, and a picture of the tubing decal on the seat tube.

Looks like it to me...

You're here for some answers, but you didn't ask any questions.

It's a PX10. I can tell you that much.

Grand...how were you able to determine it was a px10 from those photos? I'm not challenging it at all...I am asking to learn.

Chrome, Stronglight and Nervex to name a few things...Tubulars are a strong indication as well.

yay! every once in a while a px10 ID thread turns out positive!

here ya go

I could be wrong but based on the serial number the frame set would be 1957 (five digits = fifties and the first number, 7 indicates 57. This was the information I used to identify the vintage of my own PX10. Is this a safe way to identify and date the bicycle. I really do not know. There is an awful lot of controversy about what is and what is not a PX10.

Yup, early 1970s PX-10. Congrats! It is definitely not a 1957, which would have had the primitive suicide front shifter and pull-chain rear (ugh), as well as a much older-style crankset. Peugeot serial numbers remain an enigma.

+1 That is one heckuva nice survivor...Couldn't ask for a much better example of a stock PX10 then that!
A pair of tires, some new cables and a thorough cleaning (the Reynolds decals are VERY fragile) and relube should make that road worthy in a couple hours...Make sure you get the right crank puller before attempting to service the bottom bracket! Also check the rear deraileur very carefuly for hair line cracks. They have a reputaion for failure.

There is no way to accurately ID a Peugeot's year of manufacturer by its serial number prior to 1979. BTW....those Mavic rims may have date codes on them. The bike itself is a '70-'73 but the exact year doesnt matter as they were all essentialy the same from '70-'73.

I can tell you the bike in question does NOT have a Nervex BB shell. Anyone care to guess as to how to ID a Nervex BB shell based on the pics provided?

that's an easy one

Nervex BB shells were inscribed as such back then...

here is what i have found out about the bb on my px10
https://www.classiclightweights.co.uk...ts/nervex.html
https://www.classicrendezvous.com/France/Nervex_lugs.htm
this is what i have:
they look very similar,no?

Just out of curiosity, since I hear this a lot, were the serial numbers used in the 70s not serial? Meaning, if you had two PX-10s with S/Ns of say, 210000 and 2300000 and you knew for a fact that the former was a '71 and the latter a '73 (purely hypothetical examples, of course), could you not deduce that one with a S/N of 220000 was manufactured somewhere during or between those years? If so, it seems that there are enough examples out there with S/Ns given that you could come up with some rough ranges. Sorry if this horse has been beaten in the past, I'm still new to Peugeots myself.

You mean front derailleur dont you? The rear has metal reinforcements by the 70's. I have several bikes that have the cracked Delrin plastic. Good thing I have spares.

Those are '70s decals. It can't be later than 1973 because they moved the Reynolds decal to the down tube in 1974. Nervex DuBois cut lugs were used in 1972.

The Stronglight 93 was not used on the PR10 or PA10.

Both derailers appear to be downgrades from the originals.

Lower the stem!

The front derailleur looks right to me... Simplex Prestige, delrin plastic with the aluminum (not red plastic) cap. I bet it even has a date mark on it.

Yup. Early seventies PX-10.

They didn't put the bottom of the line Prestige on the top of the line PX10. Mine had Criterium rear and Supert Competition front derailers when I bought it new. I still have them. The front is a parallelogram, not piston type. His rear derailer may be an earlier version of the Criterium than mine.

OK.....to clarify a few things.

1. Serial numbers pior to 1979. Peugeot didnt 'serialize' them as far 'we' (we being the bicycle community) can tell. Sometimes, 7 digits = 70's, 5 digits = 50's etc, but we've (we being the bicycle community) found that exceptions tend to be the rule. Because there are many known examples that do NOT follow any rules its always best to ignore the serial number and concentrate on frame/bike features to determine a Peugeots approximate year of mannufacture.

With all due respect to classicrendevouz they really need to remove or edit the serial number info on their PX10 page. Its just flat out incorrect.

2. Derailleurs: Simplex Prestige were mostly OEM on '70-'74 PX10's. Some of them were available with a Super Competition front and/or a Criterium rear derailleur. Im my opinion any of them would considered acceptable. Fronts, primarily plunger style Prestige but Super Competitions are OK. Rears, primarily Prestige but Citeriums are OK.

3. Lugs: Nervex Professional Model 49 or 'fancy' lugs were avaialble through at least 1974. It is a mis-nomer that they were NOT available in 1972 as I own 2 PX10's that are known 1972 examples and they both have Nervex model 49 Professional fancy lugs.

4. BB shells. Well, I was wrong about the OP's bike. I've been working on a theory as to why some PX10's have rivited serial number plates while others have stamped serial numbers. As best I was able to tell bikes with seamless Nervex BB shells got the rivited plates while seamed BB's were stamped. My theory was that the seamed BB's were too thick for riviting so they were stamped instead.

The OP's bike clearly has a seamless Nervex BB shell with a stamped serial number thus poking a giant hole in my theory.

Not my experience at all. Even my lowly PA10 had upscale Criterium derailers.

I have 9 (?) Peugeots in my "collection"(biggest part of: https://www.radklassiker.org/?cat=174〈=de): a PX10 from about 1963 (BB: 6 digits, stamped into Nervex-pro BB-lug), a PR10, PA60, PR60L and the rest PY10 or 60, all from between 1975 and 1979 (early seat-tube design, not the 80's-checkerboard-type).

Exept from the PR10 (without any BB-number, but probably from 1977) and a PY60 (hand-made-to-order "prestige" model from 1977), the rest is from the riveted-aluminium-plate type (BB serial number). All of these have 7 digits and here the first digit is exactly the year of built: first digit 6 = 1976, first d. 7 = 1977 and so on. I checked and compared this serial-number theory with more bikes from friends and in most cases it is applicable, but not necessarily always. The only exeption so far I remember was a PA65 mixte from 1975 (BB-no 2xxxxxx).
In my opinion - at least here in Germany/Europe - this may be consistent with about 90 out of a 100 bikes from the seventies.

But maybe this is not transferable to US-spec bikes.

In many cases you can verify the year of construction of the bike with other components of the bike, aside from catalog comparison. Sometimes you find a number stamped into the rear side of the lever-arms of the Mafac Racer-brakes (e.g. "10 76") or into Maillard (600/700) -pedals.

(sorry for the mistakes)
before I forget: nice bike, the one above.

Fair enough, but over the years we've (the bicycle community) seen many excpetions to the rule. Many, many excpetions. My 3 PX10's partialy fall within the rule, 7 digit serial numbers but the first digit DOES NOT correspond to the model year. Keep in mid that later serial numbers, post '79 refer to the date a frame was produced which may different than the actual model year. An October '71 produced frame could be for a '72 model year bike.

My late 60's PE45? has a 7 digit serial number begining with a '1'. Something to keep in mind is that you cant trust the older catalog pics to be correct.

As Grand Bois said, lower the stem! Do it today.