Highlights
- Highly unusual Avon-Stevens-built Daimler Sovereign convertible
- 1977 example, converted from 4.2-litre coupé in 1987
- One of only eight examples known to exist
- Comes with plentiful history file
- Voluntary MOT valid until 25 September 2026
The Appeal
The Series II Jaguar XJ and Daimler Sovereign introduced a wide range of updates over the original model and included two-door coupés, which were made for just two years. Only around 1,700 of these vehicles, built on the shorter wheelbase, were Daimler examples. An even smaller number became Avon-Stevens convertibles, making this 1977 example, which was converted in 1987, a very rare car – just one of eight such Daimler Sovereigns.
The seller has owned the car since 2023, following a period of use as a wedding car and then several years in dry storage. The seller states that the car was recently displayed at a 'Simply Jaguar' event at Beaulieu, where “it received a lot of attention as one of the rarest cars there”.
The exterior of the car is finished in a deep shade of red, which it acquired at the time of conversion. The underside has, says the seller, been “comprehensively rust-proofed including injected cavity wax”. The leather interior is original, in biscuit colour. Both exterior and interior would benefit from some attention to remove signs of wear and tear.
The seller states that the car is reliable and drives well. Upgrades include HS8 carburettors with manual choke (in place of original HIF7 items), an electric fan (in place of viscous) and a performance stainless steel exhaust. The car comes with various receipts and MOT certificates, plus valuation certificates, dating back to the 1990s.
This is an attention-grabbing and rare car of historical interest, which would suit any Jaguar enthusiast – especially one with the opportunity to spend a little time and effort improving some cosmetic points to add value. The car is described by the seller as “a pleasure to drive, either with the roof up in 'pillarless coupe' style, or top down with the wind in the hair”.

Key Information
- Mileage: 78,929 miles (indicated)
- Country of registration: United Kingdom
- Technical inspection status: MOT exempt; voluntary MOT valid until 25 September 2026
- Technical specs: 4,235cc 255bhp in-line 6-cylinder petrol, 3-speed automatic
- Paperwork: V5C, MOT certificate, original promotional material, hood lowering and raising instructions, Autocar article, original 1991 overview from designer Anthony Stevens, 1995/1996 valuation certificates from Jaguar Driver’s Club, number of invoices and receipts
The Detail
- 1977 Daimler Sovereign
- Converted from coupé to convertible by Avon-Stevens in 1987
- Deep red exterior colour, acquired in 1987
- Original biscuit leather interior
Recently fitted new components:
- Front tyres
- Front brake pads
- Rear brake discs, callipers and pads
- Coolant hoses
- Engine belts
- Various gaiters and suspension bushes
The seller notes that:
- The exterior exhibits some signs of ageing in the form of a few blisters, touch-ups and peeled lacquer
- The bumper chrome is good with only light pitting; smaller chrome parts such as door handles show some pitting
- The soft-top roof has one 3-inch tear that has been patched from the inside
- The headlining of the soft-top would benefit from minor attention
- Some historical welding is evident underneath the car
- The leather interior features patina and some minor wear, including one small tear and worn bolster piping on the driver's seat
- The dashboard wood has some lifting to the varnish/clearcoat
- The aftermarket stereo is not operational
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