For your consideration, here is a Hallmark Mugs Series How To Get Along At The Office Coffee Mug, copyright date 1984, made in Taiwan.  It stands 3 7/8 inches tall and has a diameter of 3 ¼ inches.  It has some wear and a small nick on the bottom ring edge.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (596.973o-1.6b4)