Pair of Vintage EL C1K Thyratron Industrial Vacuum Tubes - Marietta College Physics Dept.

A matching pair of vintage EL C1K industrial thyratron vacuum tubes manufactured by Electrons Inc. out of Newark, New Jersey, USA. These rugged, gas-filled grid-controlled rectifier tubes were premium components designed for mid-century industrial automation, laboratory power supplies, and classic electric motor speed controls.

Provenance & Local History:

These tubes feature exceptional local academic history, acquired directly from the estate collection of a longtime physics professor at Marietta College in Marietta, Ohio. They were preserved alongside professional vintage electronic bench-testing equipment and laboratory components, making them a fantastic addition for collectors of collegiate scientific history or Mid-Ohio Valley industrial memorabilia.

Condition & Technical Specifications:

- Physical State: Good, clean vintage cosmetic condition. The heavy glass envelopes are fully intact with zero cracks, chips, or fractures.

- Markings: The striking silver-and-black Electrons Inc. factory labels are clear, sharp, and entirely legible on both tubes.

- Base & Pins: Heavy metal bases are secure. The thick pins appear straight with only typical, age-appropriate surface oxidation as shown in the close-up gallery photos.

- Test Status: These tubes are physically untested due to the specialized high-voltage equipment required to properly cycle an industrial thyratron.

Buy with Confidence - Risk-Free Return Policy:

To ensure absolute satisfaction for amateur radio operators, bench testers, and industrial restorers, returns are fully accepted within 30 days of delivery. If these tubes do not perform to your specific equipment requirements, you can return them for a refund. Per store policy, the buyer is responsible for all return shipping costs.

Please review all high-resolution gallery images to inspect the stamp numbers, glass clarity, base alignment, and pin condition prior to purchasing.

Packaged with professional care. These heavy industrial glass tubes will be wrapped individually in multiple layers of heavy-duty bubble wrap to prevent glass-to-glass contact. They will be nested securely within a rigid shipping box surrounded by dense packing material to ensure zero movement and absolute protection against drops or vibration during transit. Shipped with tracking.