The V/Y could just be how it's inked. I just find it unusual that the day is before the month. It's typical in other countries, but I cannot recall off hand a postmark in the U.S. with that order. I could be wrong and haven't looked at too many machine postmark of this time period.
I looked around on
ebay and there are other 1967 era machine postmarks from the U.S. with the day before the month, but still not as common as the month first then day order.