There are scores of shotguns from this time period (1883 to 1899). The Cimarron 1883 and 1889 shotguns are modern inside and ‘period’ outside. They do not replicate / copy any specific firearm, however, features of original shotguns from the Cimarron Collection were copied.
The deluxe model would have been the cream of the crop. The most visual feature of the deluxe is the side lock style construction. The single trigger is a very important feature for both the SASS and CMSA shooter.
The same things hold true for the 1889 box lock style series.