pair altec 604e with sequential serial numbers ? cabinets

[Twodawgz]

I just bought a pair of altec 604e's with crossovers in what i think are factory cabinets that appear to never have been removed. The guy i bought them from said his dad bought them in the late 60s or early 70s. Wonder if anyone can help figure out if the cabinets are altec or something else. have pics i can email

So that others might assist you further, where are you located John?