Help Identifing Motor

[dynamic]

I just purchased my first re-furb project, a Fox, and it came to me with a non-stock motor that I'm not familiar with. The well worn sticker states the motor is a Parma Yokomo Stock. Some quick searching hasn't turned up much and I though someone on here may be able to shed some light on exactly what it is.

[terry.sc]

The name means it's a Stock class motor, so it will be a 27 turn motor.