Ektachrome 100D and Canon 514XL-S:
The Canon 514 XL-S (first introduced in 1976) is a compact sound super 8 movie camera and was Canon's first sound camera. It became a long-selling hit because of the sophisticated sound system which has manual and automatic audio level controls. Unfortunately sound cartridges aren't available anymore, but you can still use this camera to record sound externally because it's more quiet than non-sound cameras.
What's it worth? Take a look at this list of: sold Canon 514 for a value indication.