Up for your consideration: a single 6 inch polymer cone woofer, with mesh surround.  Tested and fully functional.  Basket diameter is 6 3/8 inches side-to-side, 7 7/16 inches diagonal, DCR 3.3 on multi-meter, two pounds five ounces unpacked.  See pictures for additional factory markings.

Great for restoration/replacement/DIY/spares. I combine shipping whenever safely possible.

I usually use USPS Priority Mail or FEDEX.  Sometimes mail delivery is slow, no matter what carrier I use.  This is a hobby for me, not a high-powered business; however, rest assured I use real packing materials to make sure your item arrives undamaged.  You get the same high quality shipping treatment from me if you buy an inexpensive item or rare, high value components.