This exhibit has split pin base pins and is fully silvered inside the glass. No identification of any type can be seen suggesting it once had a paper label around the base. It is possibly of Dutch origin.
The base shell and base pins.Thanks to Derek L Widdowson for donating this exhibit.The balloon envelope is 40 mm in diameter, and excluding the B4 base pins is 79 mm tall.Reference: Observation. |
Pin Connections
| 1 | 2 | 3 | 4 |  a | g1 | f | f |
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Updated July 30, 2015.
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