This cutter states "National Cigar Stands" - "Black & White 5¢ Cigar" No mfg. name.
The leather end piece that connected to the gentleman's belt or button buckle is somewhat hard now, but understandable after 100 plus years old.
The clasp & bail is something you will find on fine jewelry, which Miller Bros. products demanded.
Perhaps one of the most important facts you should take note of is that while an 18K alloy is considered gold, this is not always the case with a 9K alloy, depending on the country it is sold in.
For example, in the United States, 9-karat jewelry cannot be sold as gold. In order for an alloy to be considered gold in the U.S., it has to have a purity level of at least 10 karats.
I opened the blade of the below cigar cutter and realized it was made by Miller Bros. Meriden Ct. C-1872-1926. Having obtained this many years ago I do not remember ever inspecting the blade for markings before today. Further investigation of the apparent Gold Bail I noticed the #9. (Bottom picture below) I assume it to be 9K gold to include the free rolling clasp.
It's always important to know what you don't know.