RCA CD4016AK Flatpack Ceramic Early Integrated Circuit Vintage Rare

CMOS Quad Bilateral Switch. Unbuffered. In 14-lead ceramic Flatpack

In manufacturer's original carrier

The flatpack package was invented in the early 60s at Texas Instruments

This device could be late 60s or early 70s

Please see my other listings for other model numbers: 

Please note: photo is representative only and may not be of the actual device shipped