I was in the market for a mitre box a month ago and of course picked up 
two just to be safe!. (a stanley 2358 and a miller falls langdon 1285c)  
Spent a lot of time trying to do research and even looked at some old 
stanley catologs.  The 2358 and other 2*** series boxes were priced 
higher than the regular boxes.  They have langdon style saw guides (use 
bearings to support the saw back opposed to langdons brass rods).  I 
think they were marketed as a box for pro shop use more than that of a 
trim carpenter.  My 2358 is probably a latter box, as there is no patent 
dates.  It has the stanley rectangle with notched corners.  It is not 
painted blue however, it is matte black with the adjustment release 
paddle and the edge of the back trimmed in red. 

Jay Moyer
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