Factory workers busily building up more speakers, about 40 years ago. I guess that can be considered vintage.

No, Mister Shaggy is NOT me from back then ;-) Not sure of the factory, if it's it's AR (Acoustic Research), might be KLH.

Update 7/9/11: it is neither AR nor KLH, it is EPI, which was located in Newburyport, Mass