Spring loaded dog clutch

[Super]

Aren't these both the same type of gear? It looks like one is open and one is closed?

Actually not, the right side of the I pictured does not have any teeth just smooth. It came from a Mattel Gullane flat drive chassis but I am curious if a regular 12 tooth gear can fit in its place for a repair with no clutch. I think the Western type steamers may have this problem if I remember correctly, I think I have one or two in the parts box I will have to check into.