| style |
diaphragm |
| brand |
Unknown
|
| based in |
|
| trademark |
|
| made |
1890 |
| retailer |
|
| earpiece |
vulcanite |
| body |
vulcanite |
| horn |
vulcanite |
| horn dia |
97 mm |
| length |
377 mm |
| weight |
201 gm |
| size |
|
| grille |
none |
| marks |
none found |
| ring |
no |
| adjustable |
screws |
| handed |
no |
| rarity |
rare |
| build |
tooled |
| condition |
ok |
| acquired |
2016 |
| seller type |
dealer |
| found in |
Zwolle |
| country |
Netherlands |
| value |
|
| seller note |
screwable hearing trumpet in for parts for easy carrying, from about 1900. material is from brown lacquered Vulcanite |
| comment |
I have never seen one like this, so a must have ! Upon inspection it is a diaphragm earpiece. |
| accessory |
|
| boxed |
no |
| shape |
flare |
| gwrok |
yes |
| wax |
no |
| bay |
5 |
| details on the field categories |
