It's 1st part IJC version of D-149: Tale of Rex (18 Jan 1982 - 11 Sep 1982). The 2nd part is coming soon.
Script: Lee Falk
Artist: Seymour Barry
Download NEW HR C2C scans (2000px width) - 88.46 MB
Scanned & edited by Venkitachalam Subramanian. All thanks & credits go to him.
P.S. The 2nd & concluding part is coming soon.