It is unmarked, but most likely made by Buckbee. It is in fair to good condition for it's age, as it has had a few issues. The tuners are friction violin style tuners. It is strung with Nylgut banjo strings.
Unmarked antique 5 string Open Back Banjo
1800's Buckbee ? Five-String Banjo
Wooden Banjo Saddle Constructed from Long Bearing Ebony for 4 String 5 String and 6 String Banjo Compatibility (5 String)
5 STRING BONE NUT 45mm Flat Base pre-cut string slots for 5 String Bass guitar.
5 String Bass BONE NUT 45mm Flat Base pre-cut string slots 5 String Bass guitar.
YUPEIUKLI 5 String Banjo Strings Replacement Strings 5 String Set Winding Part Metal Texture Suitable for Banjo Long Tone Life