From the Kodak Black-and-White Darkroom Dataguide (1988):
PANALURE- Panchromatic single-contrast paper for enlargements from color negatives-- commercial, portrait and school applications
Availability-F (Smooth, Glossy: Single weight); Paper base-Fiber; Base tint (White)
PANALURE II RC- Faster than Panalure Paper with the same applications.
Availability-F (Smooth, Glossy: Medium weight); Paper base-RC; Base tint (White)
Both papers are for printing Black-and-White from color negatives.