This "Batman '66" representation is part of an ongoing series (see "Collectible Time #83": March '17), with each kit containing a "rocky" base that ultimately blends with the others in the set.
Yagher captures Gorshin's facial likeness to a tee, as well as the actor/comedian/impressionist's hyper energy. (The kit also comes with a handy Riddler cane, an alternate/masked head and dig that crazy box artwork!!!)
The Riddler goes for $35-$40 at most hobby shops and online sources. (I got mine from good ol' trusty Z&Z Hobbies, of course, which included my "loyal customer" discount.)
Next up from Moebius--Cesar Romero's Joker!!! Hoo! Hoo! Ha-Haaaa!!!
