5513 Sub 1966

[EAV]

I have a 5513 meters first / matte dial Submariner from 1966. Serial is 1,47x,xxx

Does anyone know about following:

1) What type that was used on these.
2) Case back stamped “VI 66.” Is this an error and does it add value?
3) Original box type (mine is white with green stripe / gold pinstripe. Interior is gold pinstripe / green box with coronet and white lining / green velvet board.)
4) Is a fat font bezel correct?

Thanks! :)