Hi call, I am new to the Forum. I recently got a 1968 SG Special that currently has Schaller tuners (put on by previous owner). When I checked the back of the headstock I noticed there is an outline of a "butterfly" shaped outline of previous(?) tuners. This outline is exactly the same shape as the ones on my 1968 ES 335. Does anyone here know if the butterfly ones were correct for 1968 SG Specials. So far I've only seen the "pointed" looking ones on other 68 SG Specials.