Unaware of any published data.
$100
No published data.
10-40 USD
No published sn data.
If the revolver is an RG or Rohm, it is worth about $25-50. These were low cost, low quality firearms, and frequenly had frames made of metals other than steel.
Most likely made before 1968. 10-50 USD or so
The 22 Rosco short revolver, also known as the Rosco Vest Pocket Revolver, was produced in the early 20th century, specifically around 1900 to 1910. This small, pocket-sized firearm was designed for personal protection and was popular during that era.
Usually went by names not model numbers.
The .22 Short, was developed for Smith and Wesson's first revolver , in 1857.
Inexpensive, probably built pre-68
Late 80's early 90s
About 1912. Those were made by Iver Johnson for 23 years starting in 1910.