This picture sais: In der Uniform "Ihres" Leib-Cürassier Regiments.
This means: In the uniform of "Her" Leib-Cürassier Regiment. Not "The" Leib-Cürassier Regt.(Nr 1)...
I think this is the picture you look for. The Pommersches Nr 2 was called " Kürassier Regt der Königin...."Her" Leib-Regt...