Scientific Anglers fly reel extra spool with line

Description

Scientific Angler System ii extra spool with fly line.  Condition is excellent.  I believe these were made by Hardy's of England.
As it is an estate item, not sure of the size so it measures:
Thickness of 1.1 inches
Diameter of the back of the spool is 2.35 inches
Diameter of the front of the spool is 2.44 inches.
Please examine the photos as to condition.
No international sales.
Thanks for your consideration.