UNFORTUNATELY, WATCH RESEARCH SERVICES ARE SUSPENDED AT THIS TIME.
Watches are more than just timepieces. They reflect the ever changing trends in fashion, plus they are part of an evolving history of manufacturing technology. Watches went from being the size of turnips in the 1860s to as small as your little fingernail in the 1960s. Old watches have interesting stories to tell. Whether your watch is a family heirloom or a collectible object, hopefully these websites can provide information that will enrich your enjoyment of it.
https://www.elginnumbers.com/
http://elginwatches.org/databases/elgin_sn_intro.html
https://www.invaluable.com/blog/inside-archives-elgin-watch-prices/
Please note the above websites are NOT affiliated with the Elgin History Museum, they are provided to help you start your own research.