Pottery lamp, mid century or a bit later

Does this lamp style ring a bell with anyone? Pretty sure that coloring, cord etc. indicate 1960's-70s. Ceramic, metal plate on the bottom, it is unglazed inside. Top has some damage created in production, clay was wet and got nicked? 2nd to last photo.

 

I won't be much help, but it certainly does give me a 60's/70's feel to it.