A quick google search of "Cincinnati Regalia Co." show a lot of results, many stating they were makers of ceremonial swords for Masons and other fraternal organizations. Sorry about your father.

My condolences on the death of your father. As maddielee stated above, it appears to be a formal dress sword from an order like the Masons. The name Isaac Lee would have probably been the owner of the sword. Was he a member of your family? Most fraternal dress swords were imported. The Cincinnati Regalia Co. was a distributor. Most swords are not valuable, but I have no knowledge of the distinguishing characteristics that make one rarer than the next. It would be fun to keep the sword until you have time to do the research on the origin and value of your sword. Here is an example of a similar sword: https://www.antiqueswords.com/product/BQ3369/A-Rare-Ivory-Hilted-Masonic-Fraternal-Dress-Sword-ca-1900.html

It's not Masonic, perhaps it's Knights of Columbus.

Is/was the family Catholic?

ADDING: I think I found an ID

http://www.icollector.com/Knights-of-Columbus-Lodge-sword-and-scabbard-by-the-Regalia-Co-in-overall-very-good-condition-with_i18253384

This is a fantastic start! Thank you so much! Since we were without wifi and very busy with piles of stuff I just took pictures to share since you guys are always on top on things. No Isaac or Lee or Catholics in the family that Im aware of but this could have originated from my uncle who passed away 15 years ago in Chicago. I'll be back when I do a little research! Thanks again! XO

I agree Knights of Columbus

Yes lazy_gardens, I think it's a match and answers our question! Thanks so much!!