Online resale platforms, including Etsy, eBay and Ruby Lane, sell Eisenberg vintage jewelry. Collectors can also find vintage Eisenberg pieces at antique shows and antique shops throughout the country.
Online retailers often show images of the front and the back of Eisenberg vintage jewelry pieces to display the jeweler's marks that signify the authenticity of each item. Brick-and-mortar antique shops may let customers inspect the back of the jewelry pieces to look for the identifying jeweler's marks.
Many Eisenberg pieces feature a jeweler's mark on the back that signals each piece's authenticity. The company used several different marks through the years, and each mark helps collectors identify the approximate age of each piece. Jewelry marked Eisenberg Original was manufactured from around 1935 to about 1945. Pieces marked Eisenberg or Eisenberg Ice were manufactured from 1945 to 1950. Eisenberg Silver appeared on some silver pieces manufactured between 1943 and 1948, and later pieces manufactured between 1952 and 1970 were sometimes not marked at all.
Vintage jewelry enthusiasts can also identify Eisenberg pieces based on the unique designs and rhinestone details commonly found on the company's jewelry. Eisenberg is also known for its recreations of 1800s-era fine jewelry pieces. The company manufactured brooches, earrings, necklaces, bracelets and clips.