Here's the deal. I have a bike from my dad. I'm thinking early 70's, late 60's. I have no idea what it is. The seat says fuji in white lettering across the back but the seat may be from another bike. The fram has a very unique shape in that the rails split at the headset and the pass either side of the seat post before making a near 90 degree angle down to the rear wheel brackets. Also with the frame most of the joints between tubes is just one tube inside another and then squeezed together. The oddest thing about this bike is the 3-speed rear hub with a T-handle shifter mounted on the top rail. Also no identifying marks on the hub other than a number.
Any help with identifying this bike would be appreciated. Thanks