Vintage Canon

 C-8 Telescopic Converter 

1.6x No 53661 Lens

 For Film Movie Camera I think because I know very little about it.

The black case is in great shape and is black leather with strap.

The lens has a lens cover on the shoot end another lens cover on the large lens cover.

On the large Lens cover is printed on the backside 80 MM and this cover is metal.