The tar-filled XO is a Heathkit the other Altec, now that is a blown Cap literally blown apart.

As Bowtie has suggested that looks like a very early model "Iconic" That woofer is old maybe late 50's very early 60's

WRT to tar-filled XO IME they (Caps) should be replaced as they are still original.And quite old, caps have an effective life of 20-25 years give or take.