I would like to know when my Marx 490 was made. The box has 48-21325M on the side. Just got it out after several years and set up for the grand kids. Thanks for your help.
I’m not positive but I have found some information stating that it was made from 1962 - 1975.
If I find any additional info I’ get back to you.
Ray
1962 to 1975 is what I found as well