This vintage  bottle from 1976 is the California Perfume Co. 90th Anniversary Keepsake bottle with Cotillion cologne. The bottle has a decorative Victorian shape and the label on the front says "California Perfume Co."

The bottle is a 1.7 oz bottle and is a little less than half full. The back of the bottle has "Avon 90th Anniversary Keepsake" pressed right into the glass.

Perfumes and colognes degrade over time, so the cologne may no longer have the same scent it did 40 years ago and is best used as a collectible for display or for sentimental value rather than to wear as perfume. 

Measurements:

Height: 5.5 inches (14 cm)
Width: 1 3/8 inches (3.5 cm)
Depth: 1 inch (2.5 cm)