Good to very good condition
2 Inches long
Three of the crystals have been replaced
The patent number on the clip is 1801128. This patented clip has been used since 1930 may still be in use. So this piece is no older than 1931. Patent info is below.
1930-09-08
Application filed by Anthony E Waller
1930-09-08
Priority to US480435A
1931-04-14
Application granted
1931-04-14
Publication of US1801128A
1948-04-14
Anticipated expiration
Status
Expired - Lifetime