View Full Size Image of Snappy Vintage Copper Salt & Pepper with Tray, Metal by Artist Unknown
The stamped border designs on both the tray and the shakers relate well.
"Unknown artist" is appropriate when a work of art is unsigned and a supported opinion about who made it is not available (on Savvy Collector).. "Attributed to" precedes the name of an artist when information suggests that it likely was made by that artist (on Savvy Collector).