| Brand | N.M. Thune |
| Type | Brooch |
| Metal Purity | 925 |
| Original/Reproduction | Original |
| Main Stone Color | White |
| Metal | Sterling Silver |
| Country Of Origin | Norway |
| Handmade | Yes |
| Vintage | Yes |
This brooch is marked "STERLING" and bears the maker's hallmark on the reverse. Signed N.M. Thune. Modernist open oval design. Secure pin clasp. Sterling silver construction.