In later years this was replaced by a three way switch.
2.
The tone knob was deleted and in its place was a three way switch.
3.
Like the American version, the Mexican built ( often informally abbreviated as " MIM " for Made in Mexico ) had two pickups, a single volume control and a three way switch.
4.
A three way switch was added to the control scheme so that the pickups could be activated as humbucking pairs; neck & middle, bridge & middle, or all three in humbucking configuration for the so-called " buck and a half ".