Nice find. I think that's either a '63 or '64. The '63 has a slight bit of hourglass flare as the grip meets the shelf. It would help if you had a pic from directly above the bow looking down on the riser as it lays on the carpet, but I would go with '63.
I just pulled out my men's polar that I call a '64 even though the number is 5BD70, so I could lay it next to your pic and compare the grips. It has the exact same color and pattern as yours, but has olive green tips and does not have the slight flare to the grip.
Catalogs say only the '63 and '64 had the zebra window.
Funny I have the exact match to yours, but in men's length and without the slight grip flare, meaning a different year....
Bernie