Best Answer: Look to see if the bike says 'Made in France' anywhere on it. You'll also need to determine the model which is usually along the top tube of the bike.

A Sugino Maxy crank with a code of G-5 (1977, month 5) is on Fraser Docherty's Nishiki Olympic from 1977 (serial number starting KK indicating US market year 77). The Sugino Mighty crank from Bob Klein's 1979 Centurion Semi-Pro is marked F-11 (1976, month 11).

If it is a 'Made in France' model, go to and go to the pre-1990 values page. If not, you'll need to provide the serial number so we can determine the year of manufacture. There are 2 Motobecane versions currently sold now- one is sold only in Europe and one sold only in North America. They are both made in Asia but have different features.

The French made models are pretty old and with the exception of a couple of models (the Jubilee and the Tour de France) aren't worth much. When bike get old they typically don't improve in value, rather the values tend to plummet in direct relation to their age and condition. Again, there are exceptions but are few and far between. • Tell us some more • Upload in Progress • Upload failed. Please upload a file larger than 100x100 pixels • We are experiencing some problems, please try again. • You can only upload files of type PNG, JPG, or JPEG.

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OK people, I've only got another 500 posts remaining, so I've decided to make an attempt at decrypting one last serial number format. It seems Motobecane's format has been giving people fits, so I'm willing to give it a shot, if you want to play along. Most of you already know the drill.

Post pictures of your Motobecane (full drive side and detail pictures of major components, tubing decal, headbadge and serial numbers). Provide as much info as possible on the components including brand, model and date codes (when available). Refer to the components page of the Vintage-Trek website if you need a primer on component date codes. Bonus points if you already know the year.

NOTE: Motobecane often have several sets of numbers on the bottom bracket shell. I need ALL of them, as we don't which which holds the key to dating. I'll be tabulating and analyzing the data. A summary of the findings will be posted here (i.e. Hopefully, it will as successful as the other, similar threads (Bianchi, Centurion, Fuji, Miyata, Nishiki, etc.).

Great idea and a noble mission. Upstream intermediate b2 workbook teachers book. (Where's the little 'saluting' smilie?) My Grand Record is almost certainly 1974; it has the original Pat 74 Campy RD.

(Okay, 'almost certainly' original, take it up with my friend Bill Occam.) SN, as found on the rear non-drive DO: 2993974. There's a single, obscure letter B or possibly a numeral 6 or 8 on the bottom of the BB shell. It would be really neat if the 974 referred to the date, but no way is this that easy! Here are some pics, 'as found' and current. Tubing is 531 '3 Main Tubes.' Derailleurs are NR (pat 74), Cranks TA, pedals Atom, brakes Weinmann, hubs Maillard 'red label' Competition with Weinmann clinchers. Bars, stem, seat and seatpost had been changed out and Suntour barcons added.

I have put the 'correct' NR shifters and a Nitto 'Pearl' stem and bars on, and a recent Brooks Team Pro on an SR LaPrade seatpost. Also Tektro aero levers for the sake of my old, sore hands, and have been trying different pedals, lately 80s Specialized Touring. Most recently added new wheels, Campy HF hubs with modern Sun rims.