Many years ago, a friend had one. He said:
If the serial number begins with "cpa" that was a designation for
"Colt Pony Automatic".
That was before Colt began modern production of .380s with their name.
(mustang, mustang II, government .380 and etc)
They were produced for FI industries with the Garcia name.
Later .380 government models should be very similar, if not the same,
and may use the same magazine, the 7 shell version.
What I was told may be true, or you may have to put on your hi-tops.
Larry