I have a WMP Pioneer that has the right month and day, but the year is blurred. This is from the pre-serial era, so it is hard to know for sure if it is from the right year, but it narrows down to 1960-63. If I squint and hold my tongue just right, I can see the right year (1963), but I can't really be sure. The other characteristics are right (red ink date stamp, red felt baseball bat tone control), but they are not unique to that year.
I have an Acro with the right month and date, but it is from my 8th birthday in 1971.