I did a survey of the Eickhorn Teno series dagger blade markings a few years back. Survey was based on a total 94 EM hewers and Officer dirks observed in the old "Wittmann Offering" printed lists.

Officer dirks:-
stamped#, in the range 0346 - 1853. Exception, 3140

etched#, in the range 2353 - 3754. Exception, 8269

EM hewers:-
stamped#, in the range 0241 - 1417

etched#, in the range 2390 - 10256

I dont know if this survey answers anything and accuracy is dependant upon accuracy of the catalogue descriptions and my extraction of data therefrom. But, with a rare dagger like the Tenos' I think 94 surveyed is statistically significant.