1953 Mercedes-Benz 300 S Cabriolet A
- Engine
- 3.0L inline-six OHC with triple Solex carburettors, 150 bhp

A 1953 Mercedes-Benz 300 S Cabriolet A, chassis 188.010.00169/53, and one of only 203 such cabriolets built between 1951 and 1958. Priced above the 300 SL when new, the 300 S represented the pinnacle of post-war Mercedes-Benz luxury, powered by a triple-carburettor 3.0-litre straight-six producing 150 bhp. Delivered new to Portugal, this example passed through just two owners, the second being a prominent Portuguese diplomat who acquired it in 1967 and retained it until his death.
Ownership
- 2021-03-10Auction saleSold €250,000 (≈ $275K)
- 1953 → 1967-10-27Factory deliveryPortuguese friend of Afonso Malheiro, first ownerpartial documentation
Original owner who took delivery of the car new in Portugal. Sold it privately to his acquaintance Afonso Malheiro in October 1967.
- 1967-10-27 →Private saleAfonso Henriques da Fonseca de Azeredo Malheiropartial documentation
Prominent Portuguese diplomat and ambassador who purchased the car from a friend. Documentation is limited, comprising a service receipt, correspondence, registration papers, and what may be a restoration estimate.
Competition
- 2006Mercedes-Benz Portugal Dealership Opening Exhibition, SintraExhibited
Vehicle was displayed at the inauguration of a new Mercedes-Benz dealership in Sintra; photographic documentation of the appearance is retained in the file.
Maintenance & restoration
- —Restoration
Documentation on file includes what appears to be either an estimate or an invoice relating to restoration work, though the scope, date, and executing party are not confirmed.
Exact nature and date of any restoration work is uncertain; the relevant document is described as ambiguous between an estimate and a completed-work bill.
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