Made about 1904.
serial # 56649
I don't know exactly what model, but it would probably have been a Colt Single Action Army model.
Blue Book of Gun Values will help.
A Colt single action 1860 army with that serial number was made in 1866.
Your colt single action army dates to 1881 with the serial number you provided.
Army special & officers model officers model special single action army & bisley revolvers police positive .38 bankers special police positive special & detective special
50-300 usd
If it is Colt single action army, then it was made in 1889.
eBay
If this is a Colt single action army, it was made in 1874.
Look on the frame
My records indicate that your 45 colt single action army was made in 1883.