Original A212CW AC Air Filters

[RPO LS7]

Just curious, has anyone ever seen this type of filter with the print on the inside?

I purchased it a few years ago from a GM dealership out in the boonies, it was hanging up in the attic.

It doesn't have "BEST WAY" or "AC 212CW" imprinted on the ring, however it does have "MADE IN CANADA" stamped in the ring.

Please disregard box as it did not come with one.

Any guess as to what year or even decade it was produced?

Thanks in advance. [img]<<GRAEMLIN_URL>>/youguysrock.gif[/img]