Cannon Camera Model II-B

This was my grandfathers camera from I believe the 1950's. My parents were going to sell it at a yard sell just cause they have no use for it but I was wondering if it was worth something and should stay in the family. It includes:

Model II-B/ No: 36735
Serenar F:1.9 50mm lens
F:3.2 35mm lens
F:2 85 mm telephoto lenses

GE Exposure meter
4 endalite filter lenses
Braun pocket pack flash attachment, charger and power pack
As well as leather cases for everything.

Any information on this item would be helpful!