All Categories
Advertising
Alcohol & Smoking
Antiquities
Books, Paper & Magazines
Ceramics
Coins & Currency
Entertainment
Ethnic, Folk & Native American Art
Fine Art
Firearms and Accessories
Fraternal, Political, Organizations
Furniture & Furnishings
Glass
Jewelry
Metals
Militaria & Weapons
Natural History
Sports
Stamps
Textiles, Clothing & Accessories
Tools
Toys, Dolls, Games & Puzzles
Transportation and Vehicles
Log In
Try for free
All Categories
Advertising
Alcohol & Smoking
Antiquities
Books, Paper & Magazines
Ceramics
Coins & Currency
Entertainment
Ethnic, Folk & Native American Art
Fine Art
Firearms and Accessories
Fraternal, Political, Organizations
Furniture & Furnishings
Glass
Jewelry
Metals
Militaria & Weapons
Natural History
Sports
Stamps
Textiles, Clothing & Accessories
Tools
Toys, Dolls, Games & Puzzles
Transportation and Vehicles
Log In
Try for free
Price Guide
Marks
Library
Dictionary
Vault
Live Partner Auctions
Live Auction Events
Live Auction Items
Our Industry Partners
Blog
Articles
WorthPoint Media
Newsletter Signup
WorthPoint Indices
Price Guide
Marks
Library
Dictionary
Vault
Live Partner Auctions
Live Auction Events
Live Auction Items
Our Industry Partners
Blog
Articles
WorthPoint Media
Newsletter Signup
WorthPoint Indices
Save to favorites
Please login to save your item as a favorite.
Continue
Home
>
Marks
>
Firearms and Accessories
Mark with DUO written in circle. | #105752
Start Free Trial
or
Sign In
to see mark details.
Category:
Firearms and Accessories
Classification:
...
Full company name:
...
Company location:
...
Company dates:
...
Successor Company:
...
Dates of use:
...
Description:
DUO written in circle.
Material:
...
Application:
...
Color:
...
Notes:
...
Keywords:
circle
duo
Contributor:
...
Live Lots
Discover and Bid on Current Inventory Available from Our Industry Partners
(results based on your current search)
Relevant Firearms and Accessories Articles
November 9, 2023
by Brenda Kelley Kim
How to Get Antiques and Vintage Items Through TSA
January 30, 2023
by Daniel Kobialka
Great Discoveries: Magnet Fisherman Finds Antique Gun
November 9, 2022
by Adina Francis
Mark of the Week—Can You Identify It?
