I've gone over the ads for the five of the possible models listed above. Subject watch has a 21-jewel movement, yellow gold filled case, and looks to have 3 steps on the lugs:
1 and 2 use 17-jewel movements - not a match; #3 uses 21-jewel but has engraved bezel sides - not a match; that leaves 4-Emperor and 5-Jefferson. Both of those are yellow gold filled unengraved bezel. I see 3 steps for the Emperor not 4, and 3 steps for Jefferson. The Emperor is priced at 39.75 and jewel count is unknown, and came with a leather band. The Jefferson is priced at 42.50 and uses the 21-jewel and also came with a leather band. These both look similar to me, so the lower price could represent a lower jewel count movement.
I'm going with Jefferson at this time as the match.