The Waltham 1884 model14 size has a solid gold wheel train with gold escape wheel, Breguet HS and Fogg's safety pinion. Its features match the 16 size AWCo grade almost exactly but with more subdued damaskeening.
There is one run of the 4 1/2 pr examples that is marked Washington Hillside in the ledgers and Am grade but the rest are Am'n grade and some runs have complications as well.
This scan from the ledgers is a little difficult to read, but the run in question is 3474001 to 3474100. It is the first run of these watches and I have not seen an example from the run. There were only 100 made and they were presumably sent to the UK. If any of our English members have an example, I would love to see a picture of it.
Among the complicated watches in this group, two were sold at Bonham's in 2014 with Meylan complications added in the Gold case Shop in New York City (probably by C.H. Meylan). Bonhams : Waltham. A rare 14K gold open face split second chronographAmerican Waltham Watch Co., No. 3793103 and Bonhams : Waltham. A rare 14K gold hunter cased split second chronographAmerican Waltham Watch Co., No. 3793228.
Here are some pictures of two examples.
The model was used as the basis for many very special watches but most of those are not finished like the movement in the plain silver case Am’n grade examples.