Could be. Interesting Blitz or similar action w/ a different rear frame configuration. More than likely the Witten steel tubeset was made by the same Cat as Lindner - Dalys. There's a cut off date somewhere for Witten steel tubes I believe (a few lines down)": "The guns were made circa-1906 and circa 1908 respectively. Both carried the encircled W mark in the same spot.
Joh(?) Werner Gottgetreu of Suhl.

http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=510807&page=1


Also there was listed a Johann(?) Gottgetreu Werner. I wonder if the names got reversed or confused?

Cheers,

Raimey
rse