CW,
IIRC it may depend upon when in the Aug 72 - July 73 production run, & what was in the parts bin at the time, but I don't recall seeing the red-band one in any 73, but maybe.
Heck, I'd even had to look at the one in my early 73 again to see what it is!
See pix below, which are similar to your left one, with Bilstein on the top, but I can't read the left one's top in your pic,
I'd suggest looking at the pix in your owners manual (they're only B&W) to try to match it to what you have in the pix above, or if you don't have the manual - then find a local with a near build date to yours & look in their owners manual.
Ditto to check with a few other 73 914 owners in your area with cars around the same VIN date / Karmann plate Chassis # build date - Chassis # is decoded as: WW-D-95-###, with WW being week # in the year, D is day # M-F, 95 is Karmann plant ( or 96 adds 100 to ###, 97 200, etc.), & ### is car # that day - use a 72 or 73 calendar to get your precise date (based on year of VIN sticker on the rear driver door jamb).
The resources on the p914.org & .com websites are still in the process of being rebuilt after a lightning strike, so it doesn't show the extra info (yet, or as before).
http://www.p914.org/p914_tools.htm Here's pix of mine + tool kit, in case that's the next post which I see (note that early 73's often also had white handle screwdrivers, but this black one was in my car when I bought it from the OO in 12/75) - FYI - mine is a `73 My 914-2.0 "914S" with a 8/31/72 build date -
Click to view attachment Click to view attachment .... tool kit at next post ....
Good Luck!
Tom
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