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Interesting Unmarked Frame, Anyone know what it might be?

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Interesting Unmarked Frame, Anyone know what it might be?

Old 08-24-14, 01:58 PM
  #1  
cmsanfor
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Interesting Unmarked Frame, Anyone know what it might be?

Hi All,

I just picked this bike up off the local craigslist, the frame's unmarked but the components and quality of the build were enough to sell me. I was curious if anyone might have some insight into who the builder might have been? Some random details: It has a french threaded bottom bracket, there's only 1 set of bottle cage bosses, rear derailleur is stamped '71, and it has holes where a head badge should be. Also, it's hard to see the markings on the bottom bracket under what appears to be a repaint, but it looks something like '*GF' on one side and '8' on the other. There's also a small plate on just under the non-drive side seat cluster that has what appears to be a serial number. Appreciate any insight you guys have, let me know if there's any other info I can provide!

Best
Chris
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Old 08-24-14, 02:23 PM
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rando_couche
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The lugs and seat cluster look late 60's/early 70's at the latest. Based on the full-wrap seatstay treatment, I was going to say "English", but the serial number placement looks Italian. Unfortunately the braze-ons (especially the internal brake cable) look like a much later "upgrade".

Any idea what the bb threading (should be marked on the cups) and seatpost diameter (on the back of the post, right at the top) are? Those could be crucial in IDing the frame.

SP
OC, OR
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Old 08-24-14, 02:29 PM
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cmsanfor
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Thanks for the input Rando, the bottom bracket is French and the seatpost is 25.8
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Old 08-24-14, 02:39 PM
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It's too bad that PO's who repaint do not document what they started with. A repaint with no head badge. Well someone here may recognize the serial# location.
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Old 08-24-14, 02:57 PM
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The serial number location sounds Swiss or Austrian. Are you sure the BB is French-threaded, not Swiss?
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Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
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Bianchi: 1982 Campione d'Italia, S/N 1.M9914
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Old 08-24-14, 03:00 PM
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It's labeled 35 x 1 G, I guess the difference is the threading direction? I can check up on this later tonight.
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Old 08-24-14, 03:03 PM
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Originally Posted by cmsanfor View Post
It's labeled 35 x 1 G, I guess the difference is the threading direction? I can check up on this later tonight.
Yes: 35x1 in both cases, but the fixed cup is RH threaded for French and LH threaded for Swiss.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
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Old 08-24-14, 03:09 PM
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The crown race, top race and seat post binder bolt are all Campagnolo. Serial number looks like 241227.
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Old 08-24-14, 03:24 PM
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I have seen one of these, but memory fails today. The paint looks very heavy... chance that the original paint may be still underneath. Shame the badge is lost... I am almost saying French mid-70's. Agreed, check the BB threads to narrow it down.
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Old 08-24-14, 03:39 PM
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Originally Posted by cmsanfor View Post
It's labeled 35 x 1 G, I guess the difference is the threading direction? I can check up on this later tonight.
35 x 1G is Swiss thread; the "G" is for "gauche," French for "left."


Source: Sutherland's 4th Edition

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Old 08-25-14, 11:21 AM
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allegro special.
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Old 08-25-14, 11:30 AM
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Originally Posted by juvela View Post
allegro special.
That seems dead on. Thanks so much for the help guys!
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Old 08-25-14, 02:35 PM
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eleven tube reynolds 531c. ~1972. there is an enthusiast web site about this marque bivouaced at the internet archive:

https://web.archive/web/200302062030....com/main.html
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Old 08-25-14, 03:25 PM
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Originally Posted by juvela View Post
allegro special.
I agree; except for the top tube cabling, it's looks right on..Allegro rare swiss road bike - Pedal Room

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Old 08-25-14, 10:13 PM
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Yep, with that brazed-on plate for serial number ant that style of wrap-over stays it HAS to be some sort of Allegro. But never seen one with internal TT cable routing combined with those (BCM or Prugnat?) lugs...it's worth sending the pics to Craig Griffith (swissbicycles.com) to hear what he has to say.
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Old 08-26-14, 03:06 AM
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Here are a few pics of an Allegro I once owned. Has the same lugs, serial number 200000. Internal cable routing on OP's Allegro is most likely a modification done by a previous owner. I could never determine the exact year of my Allegro, best I could do was circa 1965.



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Old 08-26-14, 11:44 AM
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bosses clearly later than frame on op frame. so reasonable to suspect tt cable routing also after market.
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