Boss pedal serial dating

Stamped on every potentiometer (volume and tone pots) is a six- or seven-digit source code that tells who made the pot, as well as the week and the year.

The source dating code is an element of standardization that is administered by the Electronics Industries Alliance (EIA).

1949 was the last year for the CJ-2A and in 1953 the CJ-3B became available.

Unlike modern vehicles, the difference between CJ models was not distinct.

The commonly accepted description of the CJ-3A seems to apply only to the mid production vehicles.

The lack of factory parts information from the CJ-3A time period makes it very difficult to decide if and when changes were made.

OLMO with red background on left side of top tube is unfamiliar on other Olmos.

); does not have swallow rondine lugs; chrome forks; Campagnolo Cambio Corsa dropouts and fork ends DECALS: head tube and seat tube decals are Olmo 'Lazy L' star logo.

Track/pista frames are not included in this registry. A TIPO RONDINE decal may or may not appear on some older Olmo bikes, and refers to the Agrati AM lugs, with 'rondine' meaning 'swallow.' Some older Olmos have the ornate Agrati lugs which Emilio Bozzi sold as Brianza sportiva lugs; the accompanying Agrati rear dropouts are stamped with a scalloped back. Campagnolo crank arms have a date code starting in 1973, consisting of a diamond (1970's) or circle (1980's) with a number in the center denoting the last digit of the year of manufacture, and then in 1985-9 with square and number in the center: 11 = 1985, 21 = 1986, 31 = 1987, 41 = 1988, 51 = 1989 plus some other examples. after the year of an Olmo in this registry designates uncertainty about its year or range of years.

Absence of a question mark means there is some certainty about a bike's year or a range of years, established by parts dating, provenance, etc., or by preceding or following dated bikes. Olmo Rondine David Rapley/Racing Bicycles: 100 years of Steel, pp 100-101.

Olmo city bike ORIGINAL PARTS: Olmo branded handlebars and stem, brake levers, crankset, hubs, headset, seat post collar. ]; Pump pegs on back of seat tube; Chainguard mount on rear of right chainstay. Italia saddle" DATING: if a chromovelato finish was the top model, then this was probably the Gran Sport / Professional Regular model.

Fender mounts on lower seatstays and fork blades ORIGINAL PARTS: Balilla Brevattato brakes; Magistroni Senior five pin crankset with single chainring. Owner: "I believe the bike is ~1958." Open C Campagnolo dropouts date to the 1950s Serial Number D318 1958-1959 Olmo [Professional Deluxe] Brandon Ives: Swallow rondine lugs; Campagnolo dropouts, "rear dropout is drilled for a Sport rear der" ORIGINAL PARTS: "Ambrosio bar and stem, Mafac Dural Forge brakes, ...

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