Are all Couf made by Keilwerth?

[kanne]

I have bought a H. Couf Royalist I Alto with big bell and high F#. The Serial# is 11101. There is no "Made in Germany", "JK" or "Julius Keilwerth" on it.
Does anybody know more about H. Couf Saxophones? How old is this? Thanks

[stevesklar]

As far as I can remember the Royalist, Royalist I, Armstrong Heritages, Superbas were all JK horns.

Excluding post 1989 Coufs which were Taiwan horns I believe.

Royalist II were made in Elkhart, Indiana

are you sure you don't have a Royalist II ??
does your horn have nickel keys or lacquer ?
also your serial number doesn't "jive" with the JK SN listings