This IQ-213 looks in great shape, but untested. These rarely come up for sale!
Result from Google AI query - Marketed as "The Calculator with a Memory," it features dedicated memory dials that allow it to store a factor for use in multiple sequential operations without re-entry.
LA6-160 eBay find, replaced add subtract buttons and the red levers and buttons from a LA5-160 I had, made some adjustments to front tens lever, lightly oiled at wiped the case down with electronic cleaner. (Removed a bit of the paint, lesson learned, but took out a lot of marks and stains) Careful with removing the top and sides the metal may crack in the middle of front plate, as its all one piece and you need to bend it away from the machine to remove it. Works but may need calibration getting sometimes incorrect answers with division.