Good Evening As a new member I have just discovered this post from earlier this year. I hope I can help with an identification of this interesting cuirass. Judging from the two main reference sources I have for information on the Imperial German Cavalry (cited below) I think it is an officers' cuirass as worn by Regiments 3, 4, 5, 7 & 8. I do not think it is a Garde du Corps cuirass as the two black lacquered versions presented to the GdC in 1814 and in 1897 did not have the broad decorative bands around the edges of the breast and back plates, and the GdC officers had chains on the shoulder pieces, whereas the regiments mentioned above had brass scales as in your photos. Regiments 1 and 2 had a gorget on the breast plate, and regiment 6 had a 'Tombac' plated cuirass which was gold coloured. Paul Pietsche in Die Formations und Uniformierungs-Geschichte des Preussischen Heeres 1808-1914 Band 2 Kavallerie published by Gerhard Schulz, Hamburg, 1966, illustrates a similar cuirass in sketch 3, plate 97, page 59. This also includes sketches 4 and 6 which show the details of the lions heads on the rear part of the hinge and the leaf decoration on the end pieces of the shoulder straps that key onto the breast plate. Messrs Ulrich Herr and Jens Nguyen in The German Cavalry from 1871 to 1914, published by Verlag Militaria, Vienna, 2006, illustrate and describe a cuirass exactly like the one in your photos on a double page spread on pages 274 and 275. The black paint inside the cuirass is normal, as is the black paint usually found inside cuirassier helmets. As to value, I would expect to pay very much more than £250 if this cuirass were for sale!