We've got something real special here the last few weeks, a full original pair of Altec Lansing 874A Segovia's!
One thing real neat about the Segovia 874A is the 12" woofer was used exclusively in the Segovia, the magnet is just massive with an impressive extruded type basket design. They operate in the 4 ohm range and have some decent cabinet weight to them. Inside you should find the original insulation :)
The crossover lo/hi pass networks consists of 4 core inductors, 2 rheostats and 2 6uf, 1 30uf and 1 100uf capacitors. An issue when recapping XO's especially when one uses polypropylenes exclusively is size, The customer opted for Dayton PP's in this case. 100uf caps are bigger than your fist. Although a little fore-thought in spacing like below and you'll see they fit quite nicely. Tie them up with some zips and your good to go.
Its important to add a new layer of gasket I think, especially if they tack glue the drivers. Check internal soldering connections and restful with some acousa-stuff if desired. Short of wishing these had the originals grills on them, Im having a hard time giving them up and back home, what an impressive set of 3-ways, truly!