100 or so
There are many things that will determine the age of a Colt Derringer Pistol Boxset. I recommend taking the boxset to your local gunsmith or gunshop to have it inspected by an expert.
We need a make of derringer.
The lower the serial number the younger the pistol is
I was told by a gun collector that a five digit number on an imported derringer is not a serial number- it is a lot number ( a serial number should be at least 6 digits) what about the proof markings on the gun? can this identify the company or date or just the country of origin?
The PY in the middle of your serial number dates your pistol to 1982.
These are kit guns sold mostly in the 70's and 80's They usually go anywhere from 50-75 dollars depending on the condition.
No public database- sorry.
You will have to call Colt with the serial number to find out.
Impossible to answer without the serial number.
No way to answer without the serial number.
No way to answer without a serial number and complete description
Only what someone is willing to pay !