[Boatanchors] It seems like this Weber 10" might be a good substitute. . .

[Philip (KO6BB)]

  It appears that this one might just be the ticket for those National 
cabinets.  Alnico magnet, power rating just about right for PP 6V6's. It 
appears to be of similar construction to the original.  AND, Weber is 
still USA built. Unless someone here says that they tried and didn't 
like it, I think it's what I'll purchase.
See it here. . .
http://accessories.musiciansfriend.com/product/Weber-Speakers-Signature-Series-Alnico-10S-15W-10-Speaker-?sku=660019&rec=product_A

-- 
73 de Phil,  KO6BB
http://ko6bb1.multiply.com/ (My OTR Blog)
http://www.qsl.net/ko6bb/   (Web Page)

RADIOS:
Yaesu FT-2000 Xceiver for "hamming" and LF Beacons.
National NC-183 16 Tube General Coverage.
Zenith "American" Royal-7000 Transoceanic Portable.
Zenith "Taiwan made" 7000-2 Transoceanic Portable.
Radio Shack DX-380 digital portable.
6 Hz Audio filter, Tunable LF Pre-amp for NDBs.

ANTENNAS: 88' Long balanced dipole.
"Mini-Whip" (active antenna) for LF.

Merced, Central California, 37.3N 120.48W  CM97sh