Depends greatly on Condition, Condition, Condition, and Condition! From $200 to $800+ for LNIB w/ cleaning rod, instruction manual.
Condition?
The value of a Remington UMC .380 ACP ammunition can vary based on factors such as condition, quantity, and market demand. Typically, a box of Remington UMC .380 ammo may range from $15 to $25, but prices can fluctuate due to supply chain factors and regional availability. For a precise valuation, it's best to check local retailers or online marketplaces for current pricing.
Made in 1919. Check the associated link.
Greatly dependent on condition. from $200 to $1,200 for new in the box.
fair condition 300-400.
According to the Remington website, there are three possible years for the manufacture of your Remington UMC 380, with a serial number of PA 50795. Those years are 1995, 1968, or 1923.
http://stevespages.com/ipb-remington-51.html
The value of a Remington UMC 380 PA1827 can vary based on its condition, age, and market demand. Generally, prices for this model range from $200 to $500. For a precise valuation, it's best to consult recent sales data or a firearms appraisal expert. Always ensure compliance with local laws when buying or selling firearms.
Manufactured 1919
Depends on original condition from a $100 parts gun to as much as a $1,200 new in the box.
Someone at the Remington Society of America web site could probably help you.
The value will be determined by the condition of the pistol. Anywhere from $0 to $500. In Mint condition especially in the box they can be worth double that.