Sears model 187 adding machine

From: Bluegill
Email: dbelshan@lakes.com


I recently aquired a Sears mechanical adding machine. I has 8 across and 9 digits up. On the bottom is says model number 187.580140. Its light green and tan and says Sears 89M on its plastic cover. Any info is appreciated. Like year, who made it for sears. How many were made etc. It is in exellent condition.