Hello there, NoBeam!
What you have there are actually 846A Valencia Iconics. Using that model number ("846A Valencia") as a search term, you will find a wealth of information on your speakers: history, components, cabinet variations, modifications, restoration, etc.
The 846 was one of Altecs best selling speakers, have a dedicated following today, and continue to command ever-rising prices.
I would strongly suggest that you make your specific inquiries regarding your 846s on the AudioKarma and Altec Users Group forums. This site is overwhelmingly dedicated to JBL products, though there are a few of us Altec fans here, too. And, if I remember correctly, one member has a thread here devoted to his Valencia restoration.
Edit: Here's that thread:
http://www.audioheritage.org/vbullet...t=846+Valencia
While in the process of finding that particular thread, I was amazed at the number of Valencia specific posts that are contained on this site. Check them out for yourself:
http://www.audioheritage.org/vbullet...earchid=628311
Anyway, once you've perused these posts and have nailed down the exact questions you have regarding your Valencias, just ask away and we'll do our best to help you.
Looking forward to reading and watching your restoration progress. We never get tired of seeing a classic set of speakers revived for modern service.
GeeDeeEmm