foamcutter - your best source of further information is Gary Dayton at Coherent Source Service.
The model 02 woofer had a rubber surround on a paper cone. It was made by GEFCO of Illinois.
Woofer: Gefco 4829 6.5” 6 ohm 1” aluminum former
Tweeter: Peerless KO 10DT 8 ohm
Second Thiel speaker released in autumn 1976 at $220 / pair