The Parrenin 2641D is a simple pin lever Roskopf movement with 12 lignes diameter, originating from the 1980s. It is a french construction, but already produced from the Hong Kong Remex Led., which once was one of the lagest customers of Parrenin and took over the factory, when Parrenin got into trouble in the 1970s.
The gear train bridge and the balance cock have got a simple stripe decoration, which ist unusual for the price and quality class. As a contrast, the crown wheel is only riveted with the barrel bridge and one can only hope, that it never breaks, because it is also part of the simple made ratchet.
As you can see, the 2641D is a simple Roskopf movement in a pillar construction, which at least has got a directly driven center second.
The gear train itself is not typical for a Roskopf movement. Like a standard lever movement, it consists of the second wheel, third wheel, seconds wheel and escape wheel.
The keyless works is housed in a plastic cage. Fortunately, it is pretty thick and so will last longer as you normally know from plastic parts which become brittly pretty fast.
Except the “alibi” cap jewel of the movement side balance wheel bearings, there are no rubies at all.
It’s noteable, that the lever- and balance wheel cocks use the same pillars and lay above each other, but can be screwed independently.
The three leg anular balance is beared in two Novodiac shock protections, but their
bearings consist of metal and only the visible cap jewel on the movement side is a ruby.
With 18000 A/h, the balance still beats slowly and can be adjusted roughly at the very simple made hairspring key.
As escapement, a cost-efficient pin lever escapement is used, which is not really silent.
Typical for a Roskopf movement, on the lower side of the mainspring barrel, there’s a double wheel with a slipping clutch. This wheel drives the hour and minute cannon pinions simultaneously, so there’s no need for an exchange wheel.
Interestingly, this double wheel is also a plastic part and fortunately not yet brittled.
On the empty dial side, you can see, where the cannon pinion will engage with the large mainspring barrel wheel. The settings wheel also engages with the barrel wheel.
You can also spot the yoke winding system, which is a simple but efficient construction.
Like on any Roskopf type movement, the cannon pinion is driven by the mainspring barrel.
An odd detail is the shock protected cap plate of the balance wheel, which you can see at 5:30. Here, metal rubs on metal; this is neither a long-loving solution nor does it ensure good precision results.
The Parrenin 2641D has got a simple calender mechanism on which the finger of the date switching wheel is just stamped out and bended. Nevertheless, this mechanism already offers a semi-fast correction by turning the hands back to 8pm and advancing to midnight.
(Please forget the spring on top, you can see its real place on the next photo)
The first cover of the calendar mechanism offers the recess for the spring, which holds the date ring with its red(!) numbers in position.
A second cover now protects the spring against flying away.
On the remaining sticker oarts, you see that at least on the specimen shown here, the dial was not only plugged, put also glued, no idea, why they have done this.
A final word about the price classification of the movement: In the 1980s, in German mail order catalogs, watches with this movement were offered for the same or even lower prices as watches with the foreign exchange subsidized UMF 24.
In the lab
Timegrapher resultIn absolute figures, the timegrapher results are not really great, but for a pin lever movement, they are pretty OK.
The maximum positional deviation of 40 seconds is quite low and only four times of the allowed value of the COSC certification.
Only the amplitude differences between horizontal and vertical positions are high, but for a movement, where only ohne balance wheel pivot is ruby-beared understandable and still OK.
|dial up||+30 s/d||254°||0.2ms|
|dial down||+40 s/d||260°||0.1ms|
|crown right (12 up)||+5 s/d||204°||0.4ms|
|crown up (3 up)||+20 s/d||204°||0.2ms|
|crown left (6 up)||+-0 s/d||199°||0.5ms|
|crown down (9 up)||+-0 s/d||218°||0.2ms|
|Caliber base:||Parrenin 64|
|Size:||12''' (measured: 26,7mm)|
|Number of jewels:||1|
Nickel anular balance (three legs)|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Hairspring key|
|Construction type:||pillar construction|
|Winding mechanism:||yoke winding system|
|Setting lever spring:||1 hole(s)|
|Production period:||1977 - 1990|