I've seen references that J.P. Lower had an 1887 catalogue, but I have not seen one. Info suggest that such a scattergun akin to the Daly Gun was $200. His Lower Sharps rifles(Modell 1874s(75 was the number given) may have been displayed in this advert.
"Born in Philadelphia in 1833, Lower started in the gun trade at age 13, when he was apprenticed to a Philadelphia blacksmith turned gunsmith and dealer, Joseph Grubb. In five years, Lower became a master gunsmith with all of the know guns of the era. From 1851 through 1858, John busied himself with his shop duties and his own entrepreneurial pursuits, buying up surplus gun part to build fowling pieces, halfstock rifles and shotguns. He engaged several area gun makers for locks, stocks and other parts he could not obtain in the surplus channels. In addition, due to the pre Civil War demand for weapons, he invested time and money with various makers willing to breech patents of well known manufactures."
http://davelanara.homestead.com/Lowerstory.htmlG.W. Lower was some partner & expired in 1896
Kind Regards,
Raimey
rse