It's the General Electric blender!

[appliguy]

Congrats Fred on your find

and here is a tv commercial for the very first version of your blender circa 1961....PAT COFFEY

 

[wiskybill]

Fred,
The handle is very secure when attached.

The glass carafe is much heavier than the plastic and
would need a stronger handle. I think both are good designs
and you can use the glass on the smaller blender base.