The A1010 - BETA is an internal pre-release version of the later 1010 drive which was introduced with the Amiga 1000 as a second drive option. The pre-release version is NOT FCC compliant and is not to be distributed outside Commodore - so not many of this version is known to exists.
It has a Boing ball where the final version has the checkmark and a sticker at the bottom that says it's not for resale or distribution .
It contains a Matsushita drive mechanism and a pass-through port allowing the user to chain other drives or floppy port peripherals.
The drive listed here was acquired from Bob "Kodiak" Burns (Software engineer Commodore (Amiga) 1983 - 1986) at AmiWest 2016.