IIRC, Cornell Publications has what you want.
From the serial number. There are various references that list ranges of serial numbers for different years.
h&r trapper revoler serial 181538
Good chance
Hr name is Neha Pendse....
10-100 usd
'R' prefix indicates 1955
IIRC early 70s
1979
Need the serial number.
1955. This question has already been answered once before for this same serial number.
The primary serial # is stamped on the barrel of the gun opposite the cartrige ejection port
'AH' serial prefix indicates manufacture in 1971.