These incredible salt and pepper shakers are by Holt Howard, dating to about 1966.
I'm a Holt Howard collector myself, and it's HARD to let these beauties go! If you'd like to read about the history of Holt Howard, I recommend this post:
https://www.collectorsweekly.com/kitchen/holt-howard
Pattern number 7930.
Approx. 4.5" high, 1.5" across