Sounds like a very fine watch. Values for watches are hard to determine, but I'd strongly suggest you not to sell it, or to try and scrap the gold. You'll regret it.
They don't make watch-cases like this anymore, and should you think you made a mistake in the gold-scrapping, buying another case will cost a LOT.
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Elgin Pocket Watch History by: Jack
Hi - do not like to quote values but at 14K solid best to hang onto it with gold rising.
Serial Number SN Range Run Qty Name Year grade size code jewels Adj/reg/etc.
6642876 6635001 10000 1896 109 0s h3g1p 7j
grade total runs first yr last yr class size code jewels Adj/name
109 315000 68 1890 1899 60 0s h3g1p 7j
Class 60: 0s HC 3/4 pend model 1 109 315000 made 7j gilded 110 40000 made 11j 113 71000 made 11j gilded 129 13000 made 15j gilded 130 45000 made 15j 173 59000 made 7j 271 2000 made 16j ?