Source: kesslerandsons.com

Here is how Dave described its specs on the company's website:

Julius Keilwerth MKX Alto Sax
JK2000-8-0 | Gold Lacquer
Country of Manufacture:  Made in Germany
Finish:  Gold lacquer (also available in Vintage Antique Finish)
Tone Holes:  Straight Holes
Range:  Low Bb – High F#
Body Material:  German Brass
Body Construction:  Single Post to Body
  • jk2000-8-back jk2000-8-back
  • jk2000-8-bell-brace jk2000-8-bell-brace
  • jk2000-8-bell-logo jk2000-8-bell-logo
  • jk2000-8-inbell jk2000-8-inbell
  • jk2000-8-incase jk2000-8-incase
  • jk2000-8-lh jk2000-8-lh
  • jk2000-8-logo jk2000-8-logo
  • jk2000-8-neck-logo jk2000-8-neck-logo
  • jk2000-8-octave jk2000-8-octave
  • jk2000-8-rh jk2000-8-rh
  • jk2000-8-rh-thumb jk2000-8-rh-thumb
  • jk2000-8-sax jk2000-8-sax
  • jk2000-case jk2000-case
  • jk2000-case-latch jk2000-case-latch