The LDS Mk 3 was third and last F1 special built by South African driver and constructor Louis Douglas Serrurier. Unlike first two LDS cars built in 1962 and 1964 and based on Cooper designs, Mark 3 had Brabham BT11 as a prototype and was powered by Climax FPF 2.8 litre L4 engine. The car was built in 1965 and raced in 1965 and 1966 by Rhodesian Samuel (Sam) Tingle in few South African F1 races. Tingle was also a regular entrant of the South African Grand Prix, which was the round of the World Drivers’s Championship. In 1967 he entered with LDS Mk3, qualified 14th out of 18 entrants including five local drivers, but retired in the middle of the race due to an accident.
| Season | Series | Event |
| 1967 | F1WC | South African GP |
| Driver | No. | Entrant |
| Sam Tingle | 18 | Sam Tingle |
| Scale | Manufacturer | Collection |
| 1:43 | Spark | |
| Cat. No. | Quality | Rarity |
| S3367 | 
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