M2 Ammo Box Cal. 50" Year of make

[Bizio]

Maybe the reason only 100 rnds in oppose to 105 is probably logistics . Maybe the bean counters found it easier to round off to an even number.

My thoughts were that this might be meaningful to assign a year of make : it might be made after WWII and it coul'd be a transiction M2 model between the older models for 105 .50" rounds and the later models M2A1 for 100 .50" rounds only ... but maybe I am wrong. Just an idea.