From 1866-1934, the Parker
Brothers manufactured 200,000 shotguns in nine grades of quality. Only three
were ever produced at the highest level, nine, and they bear the name “invincible.”
Today, the Parker Invincibles — two 12-gauges and one 16-gauge — are the most valuable shotguns in the world, with
an estimated worth of more than $5 million. The Parker Invincible shotgun set can be seen at the NRA National Firearms Museum in Fairfax, Virginia.
This engraved shotgun model was the flagship of the Parker product line.