VERY OLD.  MOST LIKELY FROM THE EARLY 1900's.  

Made by OOCo.  Marked "12k" as seen in pictures.  I tested these as well and they tested as SOLID 12K GOLD.  See pictures.

They are 4 1/2" across the front.  The bridge is approximately 3/4".  They are 4 1/2" long.

Condition:  Still flexible.  Neither of the lenses have chips, cracks, or even scuffs.

TEST INFO:  These were tested using JSP acid solution.  A clear drop of the acid shows which karat the gold is.  The top drop was 18k, the middle drop was 14k, and the bottom drop was 10k.  As you can see from the results the gold tested between 10 and 14k gold.   EXACTLY AS THEY ARE MARKED BY THE MAKER.

Let me know if you have questions....thanks

Location D3, MER, FBMP