JP20

 The JP20 was the original Joe Pass Model it was introduced in 1981 and discontinued in 1991.

JP20 Specs
Body
Length 1040mm (41")
Width 405mm (16")
Depth 96mm (3.75")
Spruce Top (Laminated) Flame Maple Back and Sides
Neck
Scale 25.5"
Nut 44.5mm Bone
22nd 54mm
Radius 300R
Bound Multiple Cr/Bk
22 Frets
Fingerboard Ebony
Inlay Abalone/Pearl
Set Neck
Hardware
Ebony Arch Top Bridge
Ebony Tailpiece
Velve Tune Machine Heads
Tortuous Shell Pickguard
Electronics
Super 58 Humbucking Pickup
1 Volume 1 Tone

Allan Holdsworth Models

The AH10 model was released in 1985 and was available in FG (Forest Green) and BY (burgundy) In 1986 The AH20 model was also released that had two AH special pickups and was available in BK, BY and WH.

The model were discontinued in 1987

The AH models had some unique features that were never used on any other Ibanez models at the time.

Aluminum block powerocker bridge.

Tone chamber routed under pickguard

Dunlop 6100 Fretwire

AH 10 special pickup with braided wire lead.

Ebony fretboard