Kind of depends on which version. The original version (actually made by Hopkins & Allen) was made in the 1880's-1890's. The most often seen today, particularly in .45 caliber, is a replica that was made by Numrich Arms. It will have Numrich Arms markings on the barrel.
Both are fairly simple underhammer actions. The Numrich version sells for around $150-$200 depending on condition.
You will need to get a professional appraisal
The Hopkins & Allen 832 was chambered in .32 RinFire Short.
Old gun catalogs
No published sn data.
The Hopkins and Allen MOD 34 is a Tennessee style blackpowder rifle. Not much to it a basic BP rifle good for beginners. Its worth about $50-$150 depending on condition.
10-100 USD or so
$125 in working order...at most.
$50-$300 depending on condition
50-200 USD
The Hopkins and Allen company was founded in 1868 by S. S. Hopkins, C. W. Hopkins and C. H. Allen. The company experienced financial difficulties and in 1898 was reorganized as the Hopkins & Allen Arms Co. A fire in 1900 hurt them and in 1901, they were forced to merged with the Forehand Arms Company. The manufacture of Hopkins and Allen firearms ceased in 1917 when the plant was taken over by Marlin-Rockwell Corporation for the war time production of Browning automatic rifle components.
Provide the serial number.
.45 calliber