What we have here is the pre-album single from Purple Rain, an album that would catapult Prince into the mainstream for a spell.
When Doves Cry b/w 17 Days (the rain will come down, they U will have 2 choose. If you believe, look 2 the dawn and you should never lose.) (Warner Brothers 1984)
Yes, that non-LP B-Side title is a mouthful. The A side features Prince playing all instruments. The B side is the recorded debut of his first backing band, The Revolution.
Comes with a pretty snazzy custom label too, not very common at the time for 45's,