This is a used Orvis CFO series III reel made in England. It seems that #2 to #4 line is suitable. This is a rare model with a longer-than-usual latch lever for spool removal and no line guard. The logo color is faded overall.
Long Latch Needle. Large Stringer Tool. Carp Fishing Tackle PVA Stick Mix (GB4)
4pcs Carp Fishing Tackle Kit Including Fishing Bait Driller,Bait Piercing Needle,Latch Needle, Line Puller, Carp Fishing Baiting Rigs Tool Kit, Baiting Needles Carp Fishing,for Making Rigs (Green)
Fishing Line Spooler No Line Twist Portable Line Winding System Zero Twist for
Fishing Line Spooler with Line Counter for Spinning Casting Reels No Line Twist
Fishing Line Spooler, Adjustable Line Winder,No Line Twist, Portable for Casting