What model is this Infinity 5-1/2" woofer from?

Hi All,

I have a couple of Infinity 5-1/2" Woofers with Part # 974220 labelled.
Can anyone tell me what model/series Infinity speaker they might be from?
They have a black paper cone, dopped on front(poly looking) with what
looks like a black woven convex voice coil cover and rubber surround.

Thanks.