A Colt 380 hammerless with that serial number was made in 1915.
Amt 380 backup #70100
about 1916............................
the model 1908 hammerless 380 with serial # 60093 was made about 1923
The Colt 1908 hammerless .380 with that serial number was made in 1937.
What are you asking?
The Colt 1908 hammerless 380 with serial number 39901 was made near the end of year 1920 as the year 1921 started with serial number 40000.
It should be marked as to where it was made.
made in 1972
Try eBay or Auctionarms.com
pistol made about 1920
Who cares? It's such a pathetic caliber anyways.