2 pcs NU National Union 5x4G Rectifier Tube 5X4G USA

These were also given to me a long time ago.
When I acquired them, they were checked and deemed to be in good working order.
They have been stored for several years since then.
For this listing, I have only performed a visual inspection.
I assume that those viewing this listing are knowledgeable individuals, so please assess the condition, type, etc., from the photos and make your own judgment.
I have not performed any checks with instruments.
I have only looked at them and taken photos, and from what I can see, the exterior appears to have no particular issues.
I have not tested them on actual equipment.
Only those who understand what unchecked means should proceed.
I apologize, but due to severe presbyopia, I may misidentify the vacuum tube model numbers or their condition.
I trust that those with extensive knowledge and excellent judgment will be able to discern all the details from the photos.
Please make your own determination.
We kindly ask that only those who can judge appropriately from the photos and who agree to the entire profile and description purchase this item.
We cannot be held responsible if the item arrives and does not meet your expectations after you have made your own judgment. Please understand.
If there is any discrepancy between the title/description and the photos, the photos take precedence.
We will ship via the most economical #Mercari_related_shipping service available.
If your purchase is made on or around a weekend or holiday, shipping may be delayed until the following weekday after the holiday.
Due to the nature of the item, including transit and the possibility of issues arising after arrival, as well as the fact that similar items are widely available, we cannot accept returns or refunds.
Thank you for your understanding.

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