Another John C. Dueber Special, 15/17 Jewel, Hunter (HN2L-SA), c.1889.

Special Adjusted w/ Teske Regulator, Model 2 Movement. Running well & keeping time [a bit fast but, most like it, needs to be demagnetized, as the Regulator is hard on "Slow]. 

Dial is a Double Sunk, Arabic, Style, w/ 'Moon' Hands. Both the Dial & the Back Plate are marked "Special" but the NAWCC Database & pocketwatchdatabase.com both have this Serial No. as a plain John C. Dueber & a 17 Jewel, which is questionable because it's not marked [early Hampden's below 17J's were unmarked so this is likely a 15 Jewel Movement]. 

The 14K, Yellow Gold Filled Case is a Hand Engraved, "True" Box Hinged, Hunter Case.  Made by the Dueber Watch Case Co. & Guarantied to Wear 20 Years. It appears to be Original to the Movement & the pictures do not do it justice. 

I took this pic. so you could see just how bright the Case really is. It still has crappy resolution but gives a better idea of the Case's Yellow Gold Colour.  

There are "Faux" Box Hinged Cases that are usually 3-Hinge Open Face or Screw Back & Bezel Cases (in fact a Screw B&B, Box Hinge, 21J, Dueber just sold, first for $189 & then, w/ better pic's, for $520.75). They have 'cosmetic' protrusions that make them look like a Box Hinged Case. A 'Real' Box Hinge Case, like this one, have the front & back Hinges attached to the lower protrusion, or Box, & is a Full Hunter Case.