For your consideration, here is a Vintage Pennzoil Sound Your Z Advertising Mechanical Pencil, from West Bridgewater, PA, made by Rite Rite. It has some wear on it. It extends and retracts the lead fine. The eraser is hardened.

Here is the printing on it:

SOUND YOUR "Z" - SPECIFY PENNZOIL

FRANK D. HALL

W BRIDGEWATER PA PHONE BEAVER 9120

Item pictured is the actual item up for sale and comes from a non-smoking household. (309.935o-.4bx)