Help Identifying vintage Polk 5.1 Home Theater Speakers

Need an assist identifying a Polk 5.1 set of speakers. Clues I can offer are these:
All 4 except the center speaker say Power Port on the back. Two are larger, 14.5 inches tall. Two are smaller, 11 inches tall. Center speaker is 16 inches wide. Fronts and rears share the same design, 2 way speaker in an elliptical or egg shaped surround. Center channel is a 3 way.

I'll upload some photos as soon as I may to help with this. Odd that there are no model numbers on them at all.

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