Take a carefull look at the photos and you'll see what I mean. Not much vintage Master Olympic NOS on the market. Size 55 x 55 cm (C/C). Seatpost diameter : 27.2 mm.The item "Colnago Master Olympic NOS 55" is in sale since Monday, June 10, 2019. This item is in the category "Sports, vacances\Cyclisme, vélos\Cadres de vélos".-42" and is located in Paris. This item can be shipped worldwide.