Take it to a gunsmith
Have it examined by a gunsmith.
Seek the services of a good gunsmith
Hopkins & Allen made inexpensive handguns and good quality, utility shotguns from the late 1800's through the early 20th century. There is no definitive way to date your shotgun, but you can realistically range from 1880-1920. There is no collector value attributed to the H&A guns, and resale prices on the single-barrel shotguns invariably top out under $100. PLEASE have the gun checked thoroughly by a reputable gunsmith prior to shooting.
1900, give or take a couple of decades
Between 35-60 dollars.
Model 1901 Iver Johnson, semi-hammerless, automatic ejector single gun.
The name with "Tool Co" at the end was only used from 1887 - 1916.
No, Anthony Hopkins is not single.
Hopkins and Allen took over the Forehand name in 1903 and continued until 1915.
Not listed in any reference I have seen.
I'm looking for the blue book value for a Hopkins and Allen 12 gauge single gauge shotgun model #U2071,would anybody be able to help me out with this information?
If it is not marked on the barrel, you should have a gunsmith measure the chamber length.
You may have some success at the shotgun world website, (shotgunworld.com) there is a vast network of collectors and shotgun experts there that may be able to help
Utility grade shotgun, 50-100 USD or so
Can't be told with just the sn.
Without knowing more about your specific shotgun,. type of sight and what is the misalignment, we are going to have to say take it to a gunsmith. There is not much information in your question.
I have a nitro hunter 12 ga serial 555281 $50 for the whole gun
Single barrel, $50-$75. Double, $150-$250.
i also own a Hopkins & Allen single shot break open shotgun with "Forehand" inscribed on its side and i recently learned from another forum that Forehand was another gun manufacturing company that was taken over by Hopkins and Allen from 1901-1902. Hopkins and Allen continued to put Forehand on their models until 1903. therefore the gun you own is dated somewhere between 1901-1903.
Single barrel, under $100. Double-barrel up to $200 unless heavily ornamented.
1955 to 1962
That really depends on the condition. Take it to a gunsmith or appraiser or go to auctionarms.com to get an idea of what they are selling for.
There is no serial number data for the Company Hopkins and Allen in the private sector available.This firm was in business from 1867-1916.No laws required serial numbers at that time,and those that were marked with a serial number have no records remaining today.If you have a single shot shotgun,these were made from 1887-1902.If the markings say Hopkins and Allen Manufg.Co.Norwich,Conn on the gun then this was made from before 1896.If you have a double barrel shotgun,then these were made from 1902-1916,when they went out of business.