Hi Paul, To be clear on the headlamp arrangement when two brands were used on the assembly line: The hi/low beam lamps would be the same brand (GE or TungSol) and the hi beam only lamps would be the other brand. Therefore, each side of the vehicle would have one of each brand, but it would be the same arrangement on both sides of the vehicle. The right side of your F fits this description. The left side, however, has the GE as the high beam. Both high beams should be the same brand. Of course, I have no idea how careful the assembly line folks were about that. To increase the probability that some of your headlamps are original to the car, you would need to remove the outer trim ring and remove the headlamps to examine the stamp on the back, should you be interested enough to do so. They will be dirty and the stamp can rub off very easily; so exercise caution. The stamp will have a date code: either a two digit year or a single digit month and year separated by a space or "12V" or something like that. For the F, the bulbs would be from 1959 or 1960. If you have "59" or "9", or "0" or "60", you've most likely got some original bulbs. The Atlas is not original, and one of the other ones is probably not. But if the other three lamps are all "center dot" lamps they are certainly of the correct vintage. Thanks for your interest in the article. Carl _____ From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Paul Martin Sent: Wednesday, September 28, 2011 3:50 PM To: Bob Merritt; Chrysler 300 List Subject: Re: [Chrysler300] article on headlamps and what is new Thanks to Carl for this information. Immediately after reading I wnt to check on my 300F to find it had 3 out of 4 original headlamps, Right low beam is a GE and Right High Beam is a Tung Sol. Left High beam is a GE and Left low beam is an Atlas and I presume a replacement. Paul ________________________________ From: Bob Merritt <bob@xxxxxxxxxxxxx <mailto:bob%40simplexco.com> > To: Chrysler 300 List <Chrysler300@xxxxxxxxxxxxxxx <mailto:Chrysler300%40yahoogroups.com> > Sent: Wednesday, September 28, 2011 8:08:18 AM Subject: [Chrysler300] article on headlamps and what is new We have a new article on Letter Car headlamps written by Carl Bilter. See http://www.chrysler300club.com/tech/headlamp/lamp1.html Well done Mr B. To keep up with new information at the web site, perhaps you want to book mark the What's New page at http://www.chrysler300club.com/whatsnew/whatsnew.html It is the easiest way to find recent material. [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylangYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/