GIFT HORSE
The proverb "Don't look a gift horse in the mouth" typically means to be grateful when you receive a gift, but originally it referred to the practice of evaluating the age of a (gift) horse by looking at its teeth.
gift horse - 1963
GIFT HORSE - 1967
GIFT HORSE
The Ionic columns suggest this gift horse is inspired by Greek mythology - the legend of the wooden Trojan Horse the Greeks used to enter Troy.