Rubber band dating
Think I still have these hubs, again I could mis-remember, but think they had CAM 58 on the lock nuts. Cant recall the pedals." DECALS: OLMO in Red Oblong Outline on downtube, edged in bands; On seat tube, there are bands but is missing the Olmo shield; MADE IN ITALY at top of seat tube; TIPO RONDINE at top of downtube; Olympic rings with Olmo star decal at top of fork legs DATING: if a chromovelato finish was the top model, then this was probably the Gran Sport / Professional Regular model. Olmo [Gran Sport / Professional Regular] Chip Duckett: Open C chrome Campagnolo dropouts ORIGINAL PARTS: "appears all original absent wheels..C (Campagnolo) Gran Sport FD and RD with adjuster barrel... Campy locknuts do say 58." Has the Campagnolo Sport sprung pivot derailleur hole in the right rear dropout, which is 1952 Serial Number D352 1959? Campy head set" DECALS: "Olmo decal in the front" DATING: Probably the PROFESSIONAL DELUXE model. I am assuming this frame set is from the late 50s." ORIGINAL PARTS: "Olmo branded steel seat post collar. Campagnolo Gran Sport drivetrain and Magistroni Cranks, first generation GS pedals and 2nd Generation GS headset with domed nut (many people here in the US thinks this is the first generation, but there are no "seals" on the bearing races). 2nd generation Campagnolo Gran Sport pedals with longer threads and no o-ring came out in 1959. Has the Campagnolo Sport sprung pivot derailleur hole in the right rear dropout, which is 1952 Serial Number D622 1960?Magistroni cranks/BB and Olmo stamped headset/collar. Olmo [Gran Sport/Professional] Kevin Kruger: Swallow rondine lugs with no seat lug side slot; Campagnolo open-C dropouts drilled for Sport rear derailleur; "Original primary black paint with cromovelato treatment on top tube, seat tube, and fork blades. Olmo [Gran Sport / Professional Regular] Felix Chiu: Swallow rondine lugs with no seat lug side slot; Agrati "AM" lugset; Campagnolo 1010 ends; chrome stay ends, fork ends, head lugs, and seat tube panel PARTS: Gran Sport front and rear derailleur with cable adjuster; OLMO headset and seat post collar; Universal Extra BREV 453949 brakes; Cottered crankset, likely Magistroni; Ambrosio Champion handlebars and stem; Ideale 39 saddle DECALS: OLMO in Red Oblong Outline decals; Olympic rings with Olmo star decal at top of fork legs; TIPO RONDINE at top of downtube; CAMBIO CAMPAGNOLO winged wheel at top of seat tube; OLMO shield on chrome panel with four color bands on seat tube; MADE IN ITALY decal near top of down tube; Reynolds 531 decal on seat tube (false decal? ) DATING: "My 58ish has the serial number D622 stamped at the back of the seat-lug." Campagnolo Gran Sport rear derailleur lost its cable adjuster around 1960.Juy 51 made 1951-1957; Competition with metal knob made through 1960, plastic knob made through 1961: "Derailleurs of the World, Simplex" [Cambio I] Serial Number E127 1961?Olmo [Professional Deluxe] Miramar Road bike rider, seen by Peter Brueggeman: Swallow rondine lugs; Falck tubing; originally gold chromovelato ORIGINAL PARTS: Mafac centerpull brakes; Campagnolo parts: crankset, pedals, Gran Sport rear derailleur, high flange hubs with straight quick release levers DATING: Probably the PROFESSIONAL DELUXE model. I switched out the brakes, from mafac center pull to... the hubs, crank, front & rear derailleur and shifters are all original." Serial Number E177 1960-1961 Olmo [Professional Deluxe] bicycledreamer/e Bay: Swallow rondine lugs with no seat lug side slots; Campagnolo dropouts; chrome head lugs REPAINTED with remnants of red chromovelato paint underneath BRAZE-ONS: top tube brake cable ORIGINAL PARTS: OLMO seat post clamp; 'O' seat post bolt nut; Mafac rear centerpull brake hanger; seller said it had Campagnolo parts DATING: Probably the PROFESSIONAL DELUXE model; Has the Campagnolo Sport sprung pivot derailleur hole in the right rear dropout, which is 1952 Serial Number E188 1960-1961 Olmo Gran Sport merziac/Bike Forums.net; formerly owned by Bruce Mc Cormmach: Swallow rondine lugs with no seat lug side slots; Campagnolo dropouts; chrome fork crown and fork ends, half chainstays and dropouts, head lugs, and seat tube panel; Falck tubing ORIGINAL PARTS: Campagnolo Gran Sport derailleurs and shifters; Magistroni crankset; Ambrosio Champion handlebars and stem; Mafac brakes; Olmo headset and seat post collar; Campagnolo high flange hubs with straight quick release levers; Wolber sewups DECALS: OLMO GRAN SPORT on downtube, with OLMO in gold letters; TIPO RONDINE at top of downtube; MADE IN ITALY band at top of seat tube; OLMO CELLE L.Olmo [Gran Sport / Professional Regular] Roger Barrett: Swallow rondine lugs with no seat lug side slot."frame with finish kaput, no transfers, Agrati "AM" lugset, Campagnolo 1010 ends, semi-sloping crown w/horizontal groove in outer side and reinforcement tangs. Ambrosio Champion steel stem and Ambrosio Champion alloy bar.
DECALS: no decals; painted blue DATING: Owner: "Sport model, 1889 on the seat tube and 17 under the bottom bracket" Serial Number UT 6275 1945 Olmo city bike [Industria Argentina] German via coventryeagle48/Flickr: Swallow rondine lugs with no seat lug side slots; chrome head lugs, fork crown, fork ends, stay ends and dropouts DECALS: Olmo in script on downtube; "Industria Argentina" under Olympic rings at top of downtube; "Campionato Italiano Diletta Iti 1942/43" on seat tube; Olympic rings with Olmo star decal at top of fork legs, and also at transition between paint and chrome on fork legs; OLMO oval on seat tube Serial Number A327 1950s? Olmo city bike cicli2d/e Bay: Swallow rondine lugs with no seat lug side slot; internal routing of top tube brake cable; Agrati dropouts; chrome head lugs, fork crown, stay ends and dropouts ORIGINAL PARTS: Olmo city handlebars; Olmo seat post collar; Olmo crankarms; Universal brakes Serial Number C505 1958? OLMO I believe it is a Professional Regular Road Racing model." Serial Number D234 1958 Olmo [Gran Sport / Professional Regular] John Siemsen/CR: Swallow rondine lugs with no seat lug side slot; Campagnolo dropouts; chrome head lugs; chrome fork crown; chrome fork tips and seat and chain stay ends; chrome seat tube band; "it was not a chromo velato finish, just a faded red." BRAZE-ONS: none ORIGINAL PARTS: "Except for saddle and Record rear derailleur, and likely rims, looked to be kitted as original with earliest Campagnolo alloy crankset with the pedal dust covers that came out in 1958. Owner: "I believe the bike is ~1958." Open C Campagnolo dropouts date to the 1950s Serial Number D318 1958 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, ...
NOT ORIGINAL DECALS: head tube and seat tube decals are Olmo 'Lazy L' star logo.
OLMO with red background on left side of top tube is unfamiliar on other Olmos.
Nisi Toro rims and Sheffield pedals." DECALS: "The seat tube decal looks like the head tube badge, no background...
TIPO RONDINE on the down tube at the head lug" DATING: Don't know if it is the Special [stamped dropouts] or Gran Sport [forged dropouts] model.
Numeric serial numbers were used from the late 1970s, and then discontinued. Serial numbers are stamped on the seat lug on older bikes, or on the bottom bracket underside on later bikes (sometimes matched by a serial number on the fork steerer tube). after the year of an Olmo in this Registry designates uncertainty about its year or range of years.