1925 Bentley 3-Litre chassis in 4½-Litre Le Mans 'Old Mother Gun' style, Vanden Plas coachwork
- Engine
- 4.4L OHC inline-four, ~100 bhp, built on a supercharged-spec block with performance camshaft, high-compression pistons, and uprated oiling

A Bentley 3-Litre chassis (no. 911), originally delivered in Melbourne in January 1925 with Freestone & Webb drophead coupé coachwork, was converted from 2003 onward into a faithful recreation of the famous 1928 Le Mans-winning 4½-Litre 'Old Mother Gun.' The chassis was shortened and modified to Le Mans specification, fitted with a performance-built 4½-Litre engine, and clothed in period-correct Vanden Plas-style aluminium coachwork. Subsequent owners added further mechanical improvements, and the car has been used on tours and rallies.
Ownership
- —Auction saleSold US$682,000
- 1925 →Factory deliveryOriginal Australian ownerpartial documentation
Car delivered new to Melbourne, Australia, fitted with a drophead coupe body by Freestone & Webb on chassis 911.
- 2003 → 2008Acquisition unknownBrian Husseypartial documentation
Acquired the car as a restoration candidate; the original coachwork was unsalvageable, so he commissioned a comprehensive rebuild to Le Mans specification rather than a factory-original restoration.
- 2008 →Private saleSwiss enthusiastpartial documentation
Reportedly spent around £30,000 on further mechanical improvements including drivetrain components, new racing pistons, and engine tuning.
- 2012 →Private saleSam and Emily Mannpartial documentation
Added to their vintage vehicle collection; further mechanical sorting was carried out during their tenure, including suspension and brake work by specialist restorers.
Competition
No competition history extracted from the catalogue.
Maintenance & restoration
- 2003Restoration
Complete disassembly and conversion to Le Mans specification: chassis shortened by 2½ inches, struts fitted, springs re-tempered and remounted, brakes rebuilt with finned drums, and period 20-inch wire wheels installed. Engine built on a 4½-Litre 'Blower'-spec block with performance internals including a Reece camshaft, Phoenix crankshaft, high-compression pistons, and uprated oiling. Drivetrain included a lightened flywheel, rebuilt gearbox, balanced propshaft, and new differential. Vanden Plas-style aluminium bodywork framed by Rod Wariner; interior trimmed in Muirhead leather by James Pearce.
Work commissioned by Brian Hussey; the 4½-Litre block was sourced from the late Russ 'Rusty' Turner. Accessories fitted included period Lucas headlamps, Klaxon horns, and dual Brooklands-type windscreens.
- 2012ServiceBlakeney Motorsport
Initial fettling and sorting of the car shortly after acquisition by the Mann family.
Blakeney Motorsport is based in Buntingford, Hertfordshire.
- 2016MechanicalD.L. George Historic Motorcars
Suspension rebuilt with correct rod-end springs; brakes rebuilt and improved; new rear wheel hubs and spring shackle bushings installed; alternator rebuilt.
Work carried out at D.L. George Historic Motorcars in Cochranville, Pennsylvania, a specialist in vintage Bentley restoration.
- —Mechanical
Further investment by the Swiss owner reportedly totalling around £30,000, covering a new alternator, starter motor, cross-shaft assembly, new racing pistons, and general engine tuning for increased output.
Work carried out during Swiss ownership, exact date unrecorded.
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