When it comes to guns to shoot I prefer the NID Model Ithacas, but for the best engraving I like the Crass, Lewis, Minier and early Flues up to the engraving change in 1915. As far as gauges go, Ithacas were only made in 10-, 12- and 16-gauges up to their introduction of the 20-gauge in 1906 in the last of the Lewis Models. Here is a nice No. 4E Lewis Model 20-gauge --
http://www.gunsinternational.com/Ith...n_id=100455691