
LOT 68 *N
The Connoisseurs Collection, Part II c.1956 FB Mondial 123cc Bialbero Grand Prix Racing Motorcycle Registration no. not registered Frame no. *404* (possibly restamped) Engine no. 206
The Connoisseurs Collection, Part II, c.1956 FB Mondial 123cc Bialbero Grand Prix Racing Motorcycle
The Connoisseurs Collection, Part II
c.1956 FB Mondial 123cc Bialbero Grand Prix Racing Motorcycle
Registration no. not registered
Frame no. *404* (possibly restamped)
Engine no. 206
c.1956 FB Mondial 123cc Bialbero Grand Prix Racing Motorcycle
Registration no. not registered
Frame no. *404* (possibly restamped)
Engine no. 206
If the Lot is to stay in the UK or is not exported within 90 days of sale, Import VAT at 5% on the hammer price is payable.
The historic machine offered here was purchased in period by a prominent Japanese industrialist directly from Mondial. At the time, the buyer was developing a fledgling motorcycle company and believed that participation in international racing would be the most effective way to demonstrate technical capability and promote the brand globally. With ambitions to compete successfully at Grand Prix level, he travelled extensively through Europe studying the leading racing manufacturers and their engineering practices. One of the companies visited was FB Mondial, which had won both the 125cc and 250cc World Championships in 1957 and whose motorcycles represented the pinnacle of Grand Prix design in those categories.
Founded in Bologna in 1929 by the four Boselli brothers, Mondial concentrated on the manufacture of commercial vehicles prior to WW2, only turning to motorcycle making in 1948 following a meeting between co-founder Giuseppe Boselli and engineer Alfonso Drusiani. Flying in the face of accepted wisdom, Drusiani believed that it was possible for a four-stroke to compete against the two-strokes then dominating the ultra-lightweight class. To obtain the necessary power, Drusiani specified twin overhead camshafts (bialbero in Italian) for Mondial's 123cc single.
After a successful debut season in 1948 which saw works rider Nello Pagani win the Italian Grand Prix, the little Mondial was further improved for 1949. Maximum power was raised to 13bhp and Pagani duly brought Mondial its first World Championship. Mondial's dominance of the 125 class remained just as overwhelming for the next two years, Bruno Ruffo taking the title in 1950 and Carlo Ubbiali in '51, before Cecil Sandford struck back for MV Agusta in 1952. By this time there was also a single-overhead-camshaft version for sale to private customers. One of the first of the latter was future World Champion Tarquinio Provini, who won every race entered in 1953, thus gaining himself a place in the Mondial works team for 1954. Less highly stressed than the Grand Prix twin-cams, the SOHC Mondial was the works' mount of choice for long-distance races such as the Giro d'Italia and Milan–Taranto.
After a relatively lean spell, Mondial returned to Grand Prix glory in 1957, taking both the 125cc and 250cc World Championships courtesy of Provini and Cecil Sandford respectively. At the end of the 1957 season, the Italian factories – Gilera, Moto Guzzi, MV Agusta and Mondial – withdrew from Grand Prix racing citing unsustainable cost increases. Around this time one of the latest 125cc machines was acquired directly from Count Boselli and shipped to Japan for technical evaluation, arriving in September 1958. The motorcycle offered here is believed to be that machine.
This FB Mondial bialbero is kitted out with the once ubiquitous 'dustbin'-type fairing, developed originally by Moto Guzzi and banned by the FIM at the end of the 1957 season. Although most of Mondial's works 125s employed shaft-and-bevel drive to the overhead camshafts, this machine has the vertical train of gears seen on some later examples. It should be noted that the frame number may have been restamped; accordingly, prospective purchasers should satisfy themselves with regard to this motorcycle's authenticity prior to bidding.
Presented in restored condition (the engine turns over), it represents a rare opportunity to acquire a thoroughbred Grand Prix racing motorcycle from one of the most successful marques of the era, whose engineering would go on to influence the development of later Grand Prix machinery in Japan.
Unregistered and offered without documents. Following a period of inactivity, this motorcycle will require recommissioning and/or restoration to a greater or lesser extent before returning to the road and thus is sold strictly as viewed. Prospective purchasers should satisfy themselves with regard to this motorcycle's completeness, history, authenticity, originality and mechanical condition prior to bidding.
Key not required
Footnotes
All lots are sold 'as is/where is' and Bidders must satisfy themselves as to the provenance, condition, age, completeness and originality prior to bidding.
Please see the Auction Information and Guide for Buyers at the top of the main sale page, for bidders' obligations. The Spring Stafford Sale
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This Lot will be auctioned on Saturday 25 April, with the auction starting at 2:30pm BST.


































































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- 25 April 2026, 09:00 - 17:00 BST
- 26 April 2026, 09:00 - 17:00 BST
Lot symbols
| * | Import low rate |
| VAT on imported items at a preferential rate of 5% on Hammer Price and the prevailing rate on Buyer's Premium. | |
| N | NOVA declaration |
| This machine is subject to post-sale customs administration and, for UK Buyers, a NOVA declaration. Whilst the responsibility of submitting the NOVA rests with the Buyer to do so, Bonhams will facilitate the process by engaging an agent (SHIPPIO) to undertake the NOVA and C88 (customs) application if applicable on the Buyer's behalf. A fee to do so will be added to the Buyer's invoice, as follows: for Live Public Sales: £350 + VAT; for Timed, Online-only Sales: £195 + VAT. |





