Classic Tails is great, he's really cute. He has an additional eyeshine, & his open mouth is actually nicely cut into the figure. He looks happy & fun, which is really appropriate. Some may have a bit of poorly applied paint (see the ear at right), so always inspect before buying to avoid it. He does not have knee or elbow joints, as his limbs are too short. Unlike modern Tails, his are separate/not attached to eachother. They're fairly heavy though, & can limit his poses or tip him over. His sculpt is really great, detailed & different from their modern version. 

 

Photo by BritsBoy122

Apparently, after a time some of the classic 3.75 size Tails figures can have their face fall off. You can see where it snaps into his head here, but it's a rather unfortunate thing to have happen. The solution should be finding the face & putting a bit of glue in the holes to keep it on forever. 

Photo by RaeLoganPhoto by RaeLogan