Marked Guide and R158.  These were used in Chevy Belaire's along with some other vehicles. I added a picture of them installed in a Belaire but of course this listing is only for the two lenses.

AUTHENTIC VINTAGE AND NOT REPRODUCTIONS.  Purchased at an estate sale.

The two mounting holes are 2 13/16" center to center.

No chips in either and light signs of age only.  One of the lenses has a hairline crack that doesnt go the any edge.  

They will be protected well and insured.

Location C3, FBMP, MER