Citroen 11BL (in RHD mode, Lt 15 to us Anglo Saxon wallers).. This car, designed in 1934, was motoring ahead of its time, with unitary construction so strong that the floor pan is not part of the strength of this car, unlike modern counterparts. Other features included a four-cylinder OHV engine, “wet liner” cylinders, front wheel drive, three speed all synchromesh gear box, dash-mounted gear lever, no transmission tunnel, heater (of sorts), all round independent suspension and flashing indicators fitted as standard on French models.

UK production ceased in 1955, and the car was withdrawn in 1957. Over 708,000 cars were made between 1934 and 1955. French models had a 6V electrical system, which was OK providing all the joints were clean and well made, with good earth connections. People say that 12v systems are better because 12v is a higher pressure than 6v, so it copes better with any conductivity problems. Otherwise there’s no difference.

This is a corker of a car, fast appreciating in value and very, very collectable. It’s got looks and style, and is well engineered - almost. The biggest problem with them is the gearbox. The drive shafts are solid metal, (no give, unlike rubber U.V. joints, in say Minis), which means that any “shock” from poor gear changing, or rapid wheel spinning acceleration (and they can), will transmit straight through to the diff assembly and you can lose a tooth. The saving grace is that gearboxes are available. Modern replacements are stronger and they are easy to install. Forty quid will buy you a Citroen workshop manual.

I used to run a Lt 15, back in the mid-to-late ‘60s. It was great on those tarmac deserts, now called motorways - no speed limits and no cars to speak of. The Thelwall viaduct was so quiet you could wander over to the inside lane, slow down to 20 mph and look at the boats on the ship canal below. This car used to fly at 80 mph. In its day, apart from Jags, there was nothing to touch it. Although thousands were made, there are not many about in good condition. Spares are plentiful and not over expensive. This model is well supported by the “Traction” Owners Club.

Other Citroen models to go for include, CV, CV6, Bijou, Ami 6 & 8, DS19, ID19, DW, (’56-’66). ID/DS Safari, DS 19/20/21 (’66-’75). DS 21/23 Pallas, and the SM (although in show condition one of these will be pricey). Individual cars in the average or restoration bracket could command £4,500 to £1,000, but be careful - this is serious engineering we’re dealing with here.