Tommasini Diamante Vintage Road Bike – 58 cm

Columbus MS – Shimano Dura-Ace 2x7 – Classic Italian Racing Bicycle

VINTAGE AND COLLECTIBLE BICYCLE COLLECTION

Beautiful and highly collectible Tommasini Diamante handcrafted in Italy and built with Columbus MS tubing paired to a stunning Columbus Air chrome fork.

This elegant Italian racing bicycle features many of the details collectors love including diamond symbols on the top tube, engraved Tommasini “T” logos on the brake bridge and fork crown, chrome fork, chrome chainstays and seatstays, and a full period-correct Shimano Dura-Ace 2x7 speed gruppo.

Finished with classic Cinelli cockpit components, Wolber tubular wheels, white Cinelli cork tape, and a gorgeous Selle San Marco Regal Girardi edition saddle with copper rails and copper rivets, this bicycle perfectly captures the craftsmanship and beauty of high-end Italian steel racing bicycles from the late 1980s and early 1990s.

This bicycle comes from a private vintage bicycle collection and would make an exceptional collector piece, Eroica-style bicycle, or classic vintage rider.

Best Offer Accepted

Location: Continental US Only

Details & Specifications

Frame & Fork

• Tommasini Diamante
• Columbus MS tubing
• Columbus Air chrome fork
• Chrome fork, chrome chainstays, and chrome seatstays
• Diamond symbols on top tube
• Engraved Tommasini “T” logo on brake bridge
• Engraved Tommasini “T” logo on fork crown
• Handmade Italian racing frame

Geometry

• Seat Tube: 58 cm center-to-center
• Seat Tube: 60 cm center-to-top
• Top Tube: 56.5 cm
• Head Tube: 17.8 cm
• Standover Height: 83.7 cm

Drivetrain & Components

• Shimano Dura-Ace 2x7 speed drivetrain
• Shimano Dura-Ace downtube shifters
• Shimano Dura-Ace front derailleur
• Shimano Dura-Ace rear derailleur
• Shimano Dura-Ace crankset
• 53/39T chainrings
• 170 mm crank arms
• Shimano Dura-Ace engraved brake levers
• Shimano Dura-Ace brakes
• Original silver Shimano cable housing

Cockpit

• Cinelli quill stem
• 130 mm stem length
• Cinelli Campione del Mondo handlebar
• 44 cm center-to-center
• Cinelli white cork tape

Wheels

• Wolber tubular rims
• Shimano Dura-Ace hubs
• Veloflex tubular tires
• Tires may require service or replacement due to age and storage
• Tubular tires are sold as-is with no guarantee

Saddle & Seatpost

• Suntour alloy seatpost
• Selle San Marco Regal Girardi Edition saddle
• Beautiful copper rails and copper rivets

Condition

This bicycle presents beautifully overall and remains in really good vintage condition with many highly desirable original details and period-correct components.

The paint and chrome remain extremely attractive for its age with no major cosmetic damage noted. There may be minor imperfections and signs of careful vintage use consistent with age.

The frame could possibly have been professionally resprayed at some point in its life, although this is unknown and cannot be confirmed.

Please review all photos carefully as they are part of the description.

Structurally the frame appears sound and the bicycle would make an outstanding collector display piece or vintage rider.

About the Tommasini Diamante

The Tommasini Diamante represents the elegance and craftsmanship that made Tommasini one of Italy’s most respected boutique frame builders. Known for beautiful lug work, refined finishes, chrome detailing, and smooth riding steel frames, Tommasini bicycles remain highly sought after by collectors worldwide.

Combined with Columbus tubing, a Columbus Air fork, and a full Shimano Dura-Ace drivetrain, this Diamante represents a beautiful example of classic Italian racing bicycle craftsmanship from cycling’s golden era.

A truly elegant and collectible vintage bicycle.