[cycleguy55]

Originally Posted by Dan Case

From AC Cars, left hand drive* CSXxxxx chassis, a model of Lucas® sealed beam. Multiple versions from the mid 1960s look the same installed in the car but numbers and marking wise on the back there are variations.

From Shelby American, it was not uncommon for cars loaned out and or used in magazine road test to have American GE® sealed beam lamps installed.

For those that might not know, lamps made for left hand drive cars have light patterns aimed the opposite way as lamps for right hand drive. In the 1980s-1990s some of the "cheap" new old stock Lucas lamps of all designs were ones for right hand drive cars, which are of little use at night in North America.;

This provides some idea of the different patterns: