ES1172  Esterbrook Recorder Desk Set, ca. 1960s, black space age desk base with cork bottom. Cork base inset is marked: Recorder Desk Set By Esterbrook Made in USA Pat Applied For. Measures 4.5 in diameter. Original Estie Ballpen is long gone! We have replaced with a generic black matte desk ballpen that uses Cross BP refills, working refill included. Excellent condition. (1 avail)