Eastman T64-T Hollow Body Electric Guitar w/Gig Bag - Ice Blue Metallic (Serial #P2501868) Snare Stands the J-45 had been affectionately

the J-45 had been affectionately nicknamed "The Workhorse"

Bridge: Rosewood with Compensated Bone Saddle

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Over the last 20 years

Here is the writeup from the 1960 Gibson catalog

Eastman T64-T Hollow Body Electric Guitar w/Gig Bag - Ice Blue Metallic (Serial #P2501868) Snare Stands the J-45 had been affectionatelyThis listing is for the exact instrument photographed Neck Material: Maple Fingerboard: Ebony Fingerboard Radius: 12" Neck Profile: Traditional Even "C" Nut: Bone 1. 72" Nut Height: . 022" Fretwire: 20 Medium Jumbo Jescar 47104 P Scale Length: 24. 75" Body Style: 16" Hollowbody Thinline Body Dimensions: 16" x 1 3 4" Body Top: Deluxe Maple Laminate Body Back Sides: Maple Laminate Truss Rod: Dual Acting Binding: Neck & Body Binding Material: Ivoroid