GIBSON EB-3 vintage slotted headstock bass short scale EB3. 

Gibson EB 3 Introduced in 1961, the EB-3 (based on an earlier model, the EB-0)was one of the bass guitar equivalents of the popular Gibson SG. It featured a slim SG-style body, a short 30.5" scale, and two pickups (a large humbucking pickup in the neck position and a mini-humbucker pickup in the bridge position). The electronics consisted of a four-way rotary pickup selector switch (for Series 1 basses; neck pickup with midrange notch, bridge, bridge and neck with low end rolled off neck pickup, neck pickup with choke) and volume and tone knobs for each pickup. The standard finish was cherry red (like the SG guitar models), though EB-3s were also produced in other finishes such as Polaris White, Pelham Blue, Walnut, and Ebony. By the time production ceased in 1979, a total of 14167 instruments had been built.

This short-scale example is in very good description and it's serial # (923337) shows it to be from 1969-1972.