Black and White Memphis-Style Ceramic Squiggle Pin

I purchased a pair of these vintage 1980s Memphis Design-syle ceramic pins at the estate sale of an artist--this one black and white, the other orange/peach--and though I am offering them for sale separately, I do believe they should really stay as a pair because they look most fabulous together!  Finely made, classic 80s, and very fun to wear. 

5 3/8" long, 3/8" diameter, perfect condition.