Can these be decoded? There are marked "K-1-5" on one side of the valve stem, and a "A" plus an upside down "7" on the other side of the stem.

Any ideas what these are?

K-1-5 should be the manufacturer
and last digit of year and month: Kelsey 71 or 81 and 5th month
"AZ" is 69-82 Corvette 15X8 with 1/2" offset
Here is a list of rally wheels (Latino version..)
http://www.geocities.com/MotorCity/Flats/8941/Rally.htm

Rene
66_Malibu

Thanks!!

FYI, for the benefit of anyone who might someday find this post...

I actually did some more research on this, and found more of the code on the wheels... Here's what I got.

K-1-5-1 (valve stem) 5

K = Kelsey Hayes (manufacturer)
1 = made at Romulus Michigan Plant
5 = Year. 5 = 1975
1 = month of the year. 1 = January
5 = 5th day of the month