- Tubing
- Mercian's mid-1980s and 1991 brochures list Reynolds 531 double-butted Competition tubing for the Vincitore, with Reynolds Professional or 653 tubing at extra cost in 1991. Look for a Reynolds decal on the seat tube. Because every frame was built to order, ask the seller what the decal says rather than assuming.
- The frame
- The lugs are the point of a Vincitore. Mercian's craftsmen cut and filed them by hand from blank lugs, and the Special adds long fancy spearpoints on the bottom bracket shell. Ask for close, sharp photos of every lug and the bottom bracket. Look for clean filing, unbroken paint at the lug edges and no rust lines.
- Sizing
- Mercian built it to order from 19 to 26 in, with extra-long tubes available for 26.5 to 30 in frames in 1991. Ask the seller to measure the seat tube and top tube, since no two need be the same.
- Threads and standards
- Mercian's brochures don't state the bottom bracket threading. Expect English (BSC), the British standard, but check, since frames were built to the customer's order.
- Wheels
- The mid-1980s touring Vincitore had clearance for 27 in high-pressure tires or 700c with mudguards, and the 1991 version for 700c and mudguards. Mercian's 1991 frame notes say all frames were then built with 126 mm rear ends unless requested otherwise. Measure the rear spacing on yours.
- Parts it came with
- Mercian sold frames, and built complete bikes to the customer's spec, so there's no standard group. Campagnolo ends and mudguard eyes were standard, and the brochures list a Tange headset and a 27.2 mm seat pillar size. Judge the parts on their own merits.
- Dating it
- Mercian keeps frame records from 1971 onward. Records before 1970 were lost, and the Veteran-Cycle Club's Mercian Cycles Register tries to rebuild them. Ask the seller for the frame number and send it to Mercian or the Register.
- Paint and decals
- Standard finish was one color of the customer's choice with contrasting head and seat tube bands, lined lugs and Mercian transfers. Lined lugs and bands that match the brochure style suggest original paint.
- Safety jobs
- New tires and brake pads come first. Then make sure the stem and seatpost move freely and the headset turns smoothly.
Check the listing photos against these lists, and ask the seller about anything you can’t see. Swapped or missing original parts should come off the price if originality matters to you. For replacements, see our vintage components guide.