I figured the best way to learn is by doing, so I went out today and bought this MBC box. I haven't been able to find a ton on MBC, looks like they made boxes in the 60's and 70's for other brands, but also made their own boxes. I am guessing Century is the model line, because I found pictures of another MBC box that had a similar badge but said El Dorado, I do like how Century is incorporated into the C.
<a href="http://s1374.photobucket.com/user/i_selinger10/media/f7a53496-c68c-48fc-af5e-42ee564bc50f_zpsecjkazgn.jpg.html" target="_blank"><img src="http://i1374.photobucket.com/albums/ag415/i_selinger10/f7a53496-c68c-48fc-af5e-42ee564bc50f_zpsecjkazgn.jpg" border="0" alt=" photo f7a53496-c68c-48fc-af5e-42ee564bc50f_zpsecjkazgn.jpg"/></a>
<a href="http://s1374.photobucket.com/user/i_selinger10/media/cd22c581-8f7d-4fa4-bdcb-da7e194d7874_zps9awgcmrd.jpg.html" target="_blank"><img src="http://i1374.photobucket.com/albums/ag415/i_selinger10/cd22c581-8f7d-4fa4-bdcb-da7e194d7874_zps9awgcmrd.jpg" border="0" alt=" photo cd22c581-8f7d-4fa4-bdcb-da7e194d7874_zps9awgcmrd.jpg"/></a>
I couldn't find a stamp, but I was able to find scans of a
1967 MBC catalog and it has the same layout as the MB-236, but my boxes' overall dimensions are slightly larger than the catalog's, and the lid is different, plus the boxes in the catalog don't have badges.