Here is an Ebay auction for a used air cleaner by Ebay member "super-novass" with a starting bid of $9.99:
This is a real deal factory FoMoCo high performance open element air cleaner. This came out of of the parts stash described above. I believe this is an earlier 60's version since it has the double hump lid design. The base appears to wear the original paint. I only see one stamp on the base which is a bit buried in paint. It looks to be a 5 or and F as shown. Either way, I am confident is a factory high performance unit.
This air cleaner is in very good unrestored condition as shown. The chrome lid is very clean original with great shine and light pitting as shown with no dings or dents. The base is also very nice with worn paint that appears original. There is no rot, dents, modifications, or repairs. This is a very nice survivor factory high performance unit.
This is your chance to own the real deal OEM high performance open element air cleaner lid and base you have been dreaming about at NO RESERVE! That's right, the high bidder at auction end will be the proud new owner of this rare and hard to find unit. Don't Miss Out!
OEM Ford High Performance Open Element Air Cleaner 60's Small Big Block Mercury | eBay
-Fred-