| Signature mark | NL 174/4103 |
|---|---|
| Subject | Glasplatte |
| Title | Unbekannt. Evtl. Versuche zur Funkenentladung |
| Date | o.D. |
| Formal information |
Format (HxB):
12x14,5 cm |
| Rights notice | CC BY-SA 4.0 |