No published sn data.
50-150
Depends on the caliber. A .45 caliber pistol uses about 40 grains of black powder. Contact the maker's website and download the owner's manual for YOUR gun.
Call Colt and they will tell you. Proofhouse.com has Colt sn data.
1200
No published sn data.
I have provided a link that explains how to claen it in detail.
$100
10-100 usd
Assuming that you have a single shot pistol, these are worth $75-$100, depending on condition. They are a modern day version of a black powder pistol. They are dated not by serial number, but a 2 LETTER code in a hollow square. Most date from the 1970s
depending on overall condition $150 - $200
Depending on the manufacturer, either Size 10 or 11.
I bought a "Dikar 45 cal black powder only " belt pistol today for $8.00 at a yard sale, What a deal!!!