Metal dial. Color of case varies. A few are yellow or red Catalin. The USA made ones I've seen have a luminous metal dial, the Canadian ones have a non-luminous metal dial.
Even though the Canadian ones say "RD 1931" on the back, they were made in the 1940s.
A metal "snap ring" holds the movement in the case.
There are 3 Models of Seth Thomas Seth Thomas "Baby Ben" Catalin Alarm Clock in the database
Black Catalin plastic cased windup alarm clock with Baby Ben movement. Case has flat top with concave corners.
Dates made: Approximate Date: ca. 1946 - 1948
Red-orange Catalin plastic cased windup alarm clock with Baby Ben movement. Case has flat top with concave corners.
Dates made: Approximate Date: 1940s
Black Catalin plastic cased windup alarm clock with Baby Ben movement. Case has flat top with concave corners.
Dates made: Example Date: December 1946
