Butyrate bobbin question

[Telemachos]

HI everybody,
anybody knows how long Gibson was using Butyrate bobbins in their HB? When were plastic bobbins introduced?

[jack briggs]

butyrate is plastic

[Telemachos]

OK, when did they quit using butyrate bobbins? If that makes more sense

[max oersted]

Good question! I'll take Pickup Trivia for $500, Alex...

[LtKojak]

OK, when did they quit using butyrate bobbins? If that makes more sense

https://www.mylespaul.com/threads/wh.../#post-9355728