Formula 1 was only in it's 5th year when Alberto Ascari was handed the keys to the Lancia D50 near the end of the 1954 season. He was already a two-time world champion and hopes were high. But the mighty Mercedes-Benz W196 would log consecutive championships in 1954 and 1955.
Following their disasterous crash at the 1955 Le Mans 24 Hours, Mercedes-Benz exited all racing at the end of the 1955 season. But it was too late for Ascari. He had been killed while testing a friend's Ferrari three weeks before.
Lancia was in financial difficulty and decided to pull out of racing also. They turned over their designs to Ferrari, and with some modifications and Fangio's skill, the D50A won the 1956 championship.
Most of the Lancia's races were run with numbers in the 26 to 36 range. Never with the number 84.