'stingrayPete1977'
Yep that is normal mate, pre EB rays were 3 bolt microtilt like Fender, then 4 bolt came in before they sold to Ernie Ball, 6 bolt neck and truss rod wheel adjusters came much later with the Stingray 5, It is a trans model probably 1986ish, it has the old logo but with ErnieBall on there too.
MB1.
Was just about to say Stingraypete will be along shortly!