hitman was right, as reinforced by your serial number/date your firearm link. There were only two variants of the rimfire: Grade I or Gold Medallion. The 136 denotes Grade I. The other A-bolt page you listed is centerfire only.
Help me understand the verbiage on the second link, low on the right side.
Serial
Number Example:
01001PT136
This would be an A-Bolt 22 Medallion rifle, manufactured in 1986 with the serial number 01001.
Mine is NY136
Doesn’t that make it a Medallion (136) DOM 1992 (NY)?
P