The Minneapolis-Honeywell Model 77 Thermostat Clock is an antique mechanical clock made of brass, with a unique round shape and key character. This 8-day, 7-jewel clock with a wind-up power source is a rare find from the early 20th century, specifically manufactured between 1905-1925.

The clock features an analog display and is an original piece from the Honeywell brand, known for its quality and craftsmanship. This thermostat clock is a charming and decorative collectible for clock enthusiasts and collectors alike.