Mystery Thumbwheel Radio

A friend gave me a very nice Thumbwheel AM Radio. I don't know what it came out of, so I don't know what it fits. On the dial it says "Dart Solid State". The channel marker is red. The selector buttons are chrome. On top it says "Made in Canada" & "Philips Mark 3".
Can anyone help me identify this? Thanks.
I may try to add a picture, but I'm not too good at that yet.......