Sony CCD-FX73OV Service Manual page 6

[Zoom
This unit employs two types of lens.
Note that the lenses are interchangeable, however their components are not.
Differentiating the lens
I
TYPE II (VCL-5412WA)
TYPE (LBV-140A)
From the front of the lens
From the right side of the lens (as seen from the front)
TYPE III (VCL-5412WB)