Here we have a "Dueber", 16 Jewel, 18 size, Hunter, Serial No. 701740, in a "Metropolitan Watch Case Co., New York.", 20yr. Gold Filled Case. 

This Model was made in 11/15/16 & 17 Jewels. All were Un-Adjusted [non-railway approved] Movements.

Movement signed "Dueber", Canton, Ohio. has Screw-Set Jewel Settings & a Teske Regulator. Most of the examples I've seen of this model are the 15 Jewel. 

The Gold Filled Hunter Case is in excellent condition. Heavily Hand Engraved with little wear & no brass showing.

Marked Warranted 20 years, w/ a Horse-Shoe & 4 Leaf Clover Trade Mark [I located this TM in Ehrhardt's book; "Trade Marks, Watch Cases, Pocket Watches, Etc."]. The short lived "Metropolitan Watch Case Co., New York." was only in business c.1890's, so it fit's the movements era.  

The "Red Dueber" "Circle" Dial is in very good shape, w/ only a small edge chip @ 3:00 [mostly hidden by the bezel]. I've seen examples w/ Open Morning Glory Hands but this does not mean that the Standard Hands, like these, weren't usually fitted by the Factory [the 1896 Catalog lists 'either Moon or Spade Hands'].