I've always liked the Electric Railroad marked watches and think they make for a great collection.
There are a few others beyond what you posted to look for out there. Here are links to two different ones I had recently, a double-signed hunting case and a dial-only example with script signature and Montgomery numerals ...
Watch is housed in a Wadsworth "Pilot" gold-filled case with very nice engine turning and engraving detail. Front shield of case is engraved with initials. Case has a nice overall in hand look showing light wear of its engine turning and engraving detail.
www.ebay.com
Find many great new & used options and get the best deals for ILLINOIS ELECTRIC RAILROAD STANDARD 17J 16S GOTHIC MONTGOMERY POCKET WATCH at the best online prices at eBay! Free shipping for many products!
www.ebay.com
Besides the above there are I believe a few more additional variations of Electric Railroad Standard dials, and there is also one early double-signed Electric Railroad Standard variant which is quite rare that has a 3/4 plate (rather than 3-finger bridge) Getty Model movement.