Hi and happy new 2022!
For comparison, some picts of a Mecklenburg-Strelitz M99 "double wrap" bugle, used in peace time at the II/GR89 . Then moved before mobilization to the Mecklenburg-Schwerin 4/RJR90 and finally during the war to the JR16 (impossible to tell if the prussian JR16 or the bavarian KBJR16). The RJR 90 was in front of Verdun (Douaumont and Vaux) during the fall of 1916, as the prussian JR16. But both bavarian KBJR16 and RJR90 fought between January and March 1918 in Lothringen and Elsass area.
I may think it was the prussian JR16 that used at last this bugle. It obviously has seen many front lines and heavy fire....(Helmet is from the 4/RJR90 too, same company as the bugle. Both objects may already have seen each other in the trench for more than 100 years...).




And here is how a Mecklenburg-Schwerin bugle is looking like (bugle in the front of the pict). It always have the leaves and the crown around of the center, in opposite to the M-Strelitz which center remains without this "framing":
We may assume that there could have been different centers for Mecklenburg-Strelitz bugles. Kris very long bugle (single wrap) is the M78 old buggle pattern (1878-1899). My shorter bugle (double wrap) is the M1899 pattern (1899-1918).
Philippe
