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PostPosted: Fri Dec 29, 2017 5:41 pm 
356 Fan

Joined: Wed Apr 02, 2008 9:49 pm
Posts: 297
Location: Gilroy, CA
After working on some 356s that have been unrestored, I noticed that some of the bulbs are "chrome like" . I have a few from long ago when we would go to wrecking yards and field strip what ever would fit into your pockets, bulbs, fuses, bolts, nuts, etc. The old Osram 3 watt bulbs in particular have silver glass, white the new ones are clear. I suppose that over the years the tungsten could have transferred to the glass.
Any thoughts about the originality, see the photo, both bulbs work.


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PostPosted: Sat Dec 30, 2017 3:21 pm 
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Location: Baltimore, MD
Are they both the same Osram part number?


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PostPosted: Sat Dec 30, 2017 8:40 pm 
356 Fan

Joined: Wed Apr 02, 2008 9:49 pm
Posts: 297
Location: Gilroy, CA
Yes I have both the 5002 which is the 3watt, and 5006 which is the 5 watt. Both of the old ones in each wattage have silver glass and new ones are clear.
I looked at a nice original car today and the license lights were both silver and the owner says he hasn't changed them in 25 years,


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PostPosted: Sun Dec 31, 2017 8:45 am 
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Joined: Tue Oct 27, 2009 5:02 pm
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Location: SE Michigan
I'm guessing tungsten transfer.
Someone needs to find a NOS, never been lit bulb and see what it looks like.

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