What's the most common Pre B CZ-75 finish?

[Metal Wonder Nine Guy]

The Pre-B came with a variety of finishes over its run. Blued, phosphate, parkerization and I think even lacquer paint all showed up on the pre B's. But does anyone know what the most common finish was for the early 75's? I would guess blued, but I have no idea.

[Skookum]

The Pre-B CZ 75 pistols feature a curved trigger guard, no half-cock feature in the hammer and no firing pin block. The first models are identifiable by shorter slide rails and were mostly available in high polish blue only.
–https://www.genitron.com/Handgun/CZ/Pistol/75/9-mm/Variant-2