I'm having a little trouble finding this exact model on the internet. The one on Dave's site is similar but not quite the same. I'd like to know the date of manufacture.
Anyone know of a site that lists all (or most) of the Monroe mechanical calculators, by model and date?
Update
Well, the first part is solved. I know it is the LX-160. I took another look inside and found LX-160-275XXX stamped on the inside (XXX are replacing real numbers ). So, it is an LX-160 but still not sure of the date. Probably early 1950s but that is just a guess. I have seen some similar ones (like the one on this site) but mine looks older.
I know they made a later model with gray paint instead of black and they also made an LX-160 but I have not found when these were first made.
It is amazing how light touch the keys are and how smoothly it operates.
Edited: 1 Jan 2004, 8:15 p.m. after one or more responses were posted