Alto 1513
Alto 1513
Eb Alto
Manufacturer: Max Keilwerth
Model/Stencil Name: Mars
Serial #: 1513
Finish: Nickel plated
Source: timefan on eBay.co.uk
Alto 3456
Alto 3456
Eb Alto
Manufacturer: Max Keilwerth
Model/Stencil Name: Mars
Serial #: 3456
Finish: Nickel plated
Source: saxofonservis.eu
Sunday 3 November 2013
Alto 4724
Alto 4724
Eb Alto
Manufacturer: Max Keilwerth
Model/Stencil Name: Mars
Serial #: 4724
Finish: Silver plated
Source: bluespeter1 on eBay.de
Alto 4962
Alto 4962
Eb Alto
Manufacturer: Max Keilwerth
Model/Stencil Name: Mars
Serial #: 4962
Finish: Nickel plated
Source: dosbonitas on eBay.com

This horn sold in April 2016 for: EUR 800.00—which was approximately US $903.88.
Alto 5383
Alto 5383
Eb Alto
Manufacturer: Max Keilwerth
Model/Stencil Name: Mars
Serial #: 5383
Finish: Nickel plated
Source: zoltiimro4 on eBay.de
Tenor 1878
Tenor 1878
Bb Tenor
Manufacturer: Max Keilwerth
Model/Stencil Name: Mars
Serial #: 1878
Finish: Nickel plated
Source: sax-ony on SOTW
Wednesday 7 January 2009