The other Sumter phones I have seen also were without one so maybe they didn't come with a cover. But I made a cover which can be easily removed. Sumter made high quality phones from 1899 to 1919. I believe this to one of the earlier ones.
The item "ANTIQUE SUMTER TELEPHONE MFG. CO TIGER OAK HAND CRANK TELEPHONE VERY RARE" is in sale since Wednesday, December 1, 2021. This item is in the category "Collectibles\Radio, Phonograph, TV, Phone\Telephones\Pre-1940". The seller is "jerryetc" and is located in Clarksville, Virginia.This item can be shipped to United States.