Holland & Holland - 500 Nitro Express, 600 Nitro Express, 700 Nitro Express Royal Deluxe Double Rifles | Facebook
![700 Nitro Express estimated to be worth 225,000 to 525,000 US dollars on display at the Rock Island Auction Company during the third day of the National Rifle Association convention. (Photo by 700 Nitro Express estimated to be worth 225,000 to 525,000 US dollars on display at the Rock Island Auction Company during the third day of the National Rifle Association convention. (Photo by](https://l450v.alamy.com/450v/t6202b/700-nitro-express-estimated-to-be-worth-225000-to-525000-us-dollars-on-display-at-the-rock-island-auction-company-during-the-third-day-of-the-national-rifle-association-convention-t6202b.jpg)
700 Nitro Express estimated to be worth 225,000 to 525,000 US dollars on display at the Rock Island Auction Company during the third day of the National Rifle Association convention. (Photo by
![Westley Richards .700/.577 Our largest droplock double rifle,..... to date. / The Explora - Premier Online Field Sports & Gun Journal Westley Richards .700/.577 Our largest droplock double rifle,..... to date. / The Explora - Premier Online Field Sports & Gun Journal](https://www.westleyrichards.com/explora/wp-content/uploads/2015/03/700-577-4643.jpg)