Prussian 2nd Garde Grenadier Regiment, Officer Waffenrock

Prussian "Kaiser Franz" 2nd Garde Grenadier regiment Waffenrock. Tunic bears the special gold bullion "sawtooth" collar Litzen and special cuff litzen for this regiment with red underlays. Dark blue tissue is average condition left uncleaned/dirty as found with numerous moth nips (see pictures). Epaulets seemingly do not belong to this waffenrock but appear to have been there forever?? They would be proper for the 2nd Garde Uhlan or 2nd Garde Regiment a Foot. A rare tunic nonetheless.