Up for your DIY/replacement/restoration use: a single 3 1/2 inch basket ALNICO magnet tweeter, with model numbers that possibly trace to Coral.  This is a 8 ohm speaker--tested and working great, with with one small repair spot as shown in pictures.    Should be useful in many applications.    

Markings: NKS-5DG.  DCR is 7.8 on the Fluke meter.  Basket diameter is 3 1/2 inches side-to-side, 4 1/2 inches diagonal.   

Will be packed carefully and protected with my usual assortment of packing material.

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

I usually use USPS Priority Mail and 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.