Those look like later, Teledyne-era ARs to me. Probably not nearly as good as the 3a speakers, but might still be quite nice for what they are.
Maybe someone else here will recognize the exact speakers and be able to comment on their sound. I have passed up quite a few similar speakers, having heard one or two. They were not bad at all, but the earlier ARs are really the best one that do the "magic", and the ones to keep an eye out for.
Like most brands (Infinity comes to mind), the AR speakers somehow became a little less special when the big company (Teledyne, in this case) came in and mass-production and bean-counting became the rule, instead of the pursuit of audio nirvana by some gifted audio-nutty engineer(s) toiling away in entrepreneurial small factories.
