Up for your consideration: a single TDX two-way speaker crossover, from a Model AS4X speaker cabinet, from 1973. Tested and working great--what looks like a shared negative wire is loose and included.  Emblem and screws included as shown.

Markings: None.

 
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.

 

Footnote on shipping:

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.