Pioneer 620 supers have a coppery colored top cover like the one on the NOS saw below.
This is a restored 620 super
If the cover is this color its from a 650.
Pioneerguy600
![IMG_1904.jpg](https://proxy.imagearchive.com/610/6102c4dbaaad47d742a1754ecccb408c.jpg)
This is a restored 620 super
![IMG_1774.jpg](https://proxy.imagearchive.com/ec4/ec43907d90beac990a5da8e4bc4c00c6.jpg)
![IMG_1912.jpg](https://proxy.imagearchive.com/a09/a09781427a5eb16b10bf088773772bf0.jpg)
If the cover is this color its from a 650.
Pioneerguy600