They should be Lucas,
In summary:-
[*]The genuine 1948 does not have Lucas written on it. It has the genuine part number (552282) on the inside edge and the date (eg "48/6") pressed into the glass also on the inside at the edge opposite the number
[*]Butlers and Lucas tractor lenses all have the name on them. (so easy to eliminate)
[*]Only the 48 Land rover lense is dead flat (inside has vertical ribs)
[*]The Dia. of the Butler is 135mm and the Lucas 137mm
[*]The original Lucas Reflector is not held in with clips like the Butler.
[*]The original Glass (48-49) has lots of evenly spaced tiny ribs running vertically. Replacement ones have some of the ribs missing so look different but still have the same number.
[*]The reflector on an original has the bulb fitted from the front whereas the Butler and tractor types have a detachable bulb holder at the rear.
[*]The body on an original Lucas is different than a Butler.
1) The Lucas mount is spot welded on the inside. If you look at the Butler it is riveted on the outside so looks different
2) The rim by the reflector is turned up at the edge to hold the U shaped rubber that holds the reflector to the body
[*]The correct lens glass is still held in with 4 spring clips to the headlight rim.
A Butler is different because the clips hold the glass and reflector
there is a thread on the LR Series one club that is fantastic as it explains all the things to look for etc,
Login
--http://www.lrsoc.com/forum/index.php'topic=20814.20--
includes photos! You need to be a member to view it, but it is a valuable resource I reckon.
This all 'stolen" from the above thread but much better with the photos that accompanies them!! But for a second there you guys thought I actually knew something! :twisted::D
cheers

