It's a antique sterling silver I want to say trinket box roughly 4.5 in x 3 in manufactured by the Derby Silver company whatever images may have been on the top closing cover or bottom have worn off Derby Silver company manufactured it's last silver products out of a factory in New York before it closed in 1933 in the company was bought it's the only way that I know that it's at least 90 years old but it could be up to 150 or 155 years old.
4.5 in x 3 in