SxS Only,
A quick search of a copy of the original records does not list the information for #16. Unfortunately the serialization book/records is spotty for the Hollenbeck, TBG co. and Royal Arms Co. a majority of the first 100 guns are absent from the records. If you remove the forend and look at the barrel lug the caliber of the rifle is sometimes stamped on the left side of the lug. Would love to see pics of your gun!!!

Dogs On Point!!! - doublenut