Nothing exotic about the drivers other than the woofer seems relatively modern (polypro?) compared to the mid and tweeter, both of which look rather early 70s. As does the styling. There is a lot to be said for bigness in speakers - larger woofers in larger boxes produce more, and deeper, bass more easily than smaller speakers. They can, of course, have their own problems - large panels tend to be more resonant than smaller ones.
Given that the woofer might not be original (and it very well might be, despite my question), and the wide range of quality in older generic speakers, I would suggest that only listening will tell you if it is worth proceeding. Keep in mind you might have better highs if you recap.