| Signature mark | NL 174/4094 |
|---|---|
| Subject | Glasplatte |
| Title | Unbekannt. Evtl. Versuche zur Funkenentladung. Beschriftet mit: "Br 3; a, b; (?)" |
| Date | o.D. |
| Formal information |
Format (HxB):
11,6x13,8 cm |
| Rights notice | CC BY-SA 4.0 |