Yes.
yes, plenty of ammo available.............
Size
Per proofhouse.com ,the Colt pocket positive with that serial number was made in 1917,making it about 92 years old.
A Colt police positive .32 with that serial number was made in 1916.
Have it checked out by a good gunsmith.
try: gun-parts.com
Internet, gun shows, want ads. you can also go to Colt Firearms Mfg and download the manual for assy/dis-assy
100-1000 USD
In 1849, production of the Colt Pocket Percussion revolvers began. Below is a link with a short history of the Pocket Colt.
made about 1913......
about 1910
under police positive 32 cal made about 1908