So I came across and old ~1893'ish according to the 908xx serial number Marlin in 38-55. It is not marked for Smokeless or BP. It does not have a model number of any sort. ~26" Octagon barrel with a full length magazine tube. Straight stock. Patent Dates Oct 11, 1887 and April 2, 1892 on the top of the barrel. Marked "Marlin Safety" on top of the receiver.
Anyone know what it is?