• Daily Deals
  • Sell
  • Customer Support

Bidding has ended on this item.

Ships to:
Visit store:
Ships to:

Details about  Rare Connecticut Telephone & Electric SODION type D-21 Tube for Display

See original listing
Rare Connecticut Telephone & Electric SODION type D-21 Tube for Display
Item Sold
Item condition:
May 06, 2012 20:01:09 PDT
Winning bid:
US $31.00
17 bids ]
Calculate Varies based on location and shipping method
Item location:
Roanoke, VA, United States


eBay item number:
Seller assumes all responsibility for this listing.

Item specifics

Used: An item that has been used previously. See the seller’s listing for full details and description of ... Read moreabout the condition
Visit Store:   ip500


Rare Connecticut Telephone & Electric SODION type D-21 Tube for Display

A very tough to find tube ... The SODION type D-21. Circa 1924 made by the Connecticut Telephone & Electric Co under the patents of Dr. HP Donle. Very unusual design with a heated inner and protective frosted outer glass bulb [with some effort you can just make out the inner bulb in a few of the pictures]. The D-21 is well described on page 329 of Saga of the Vacuum Tube.

Nice clean example of this rare tube ... open filament for display. It is clearly marked on the glass and stamped on the bottom of the tube base. Measures approx 3.25" tall X 1.25" diameter ... Very well packed shipping weight will be 1 pound from zip code 24012.

My Policies:


 I have been a collector of Scientific Instruments, Early Radios and Wireless era equipment for the past 40 years ... Discovered eBay in 1996, got hooked on the concept and have been a member of eBay since 1997. I still attend many local and national radio meets every year and travel extensively. I will always try to describe items honestly and make every effort to make the the process smooth and pleasent for both parties. I have completed well over 5000 transactions {both buying and selling} during the last 14 years and intend to be here for a long time. Accurate descriptions, good pictures, GREAT packing and fair shipping practices are my goals to produce a great buying experience and happy, repeat customers.


Buyer to pay shipping, Insurance and/or tracking are included on any item over $30.  PayPal is accepted and allows the use of credit cards.

Unlike many others I do not have a huge list of petty rules and threats for non compliance. It is all very simple...pay within the specified time and I will ship the item!

ALL INTERNATIONAL BIDDERS WELCOME! No hidden fees. No charge to fill out customs forms! No extra fee if you pay with PayPal !  I will always work to find the lowest possible shipping costs. I get rather good discounts from FedEx International and sometimes can beat the USPS Priority Mail rates with far superior service.

Please note that Customs duty is the responsibility of the buyer and that I have no control over the amount of duty charged or any delay that Customs clearance may involve. In particular there have been Customs delays in shipments to Italy in the last year or so and buyers from Italy should be aware of that and allow extra time for delivery.

Winner prepays and shipping is extra. Payment should be received within 5 days following the end of the auction. Thanks!!



1. Questions? Contact me BEFORE bidding!

2. As with all used equipment, particularily electronics..this item, unless stated otherwise is sold as-is with no guarantees expressed or implied.

3. Please remember that this is an auction..items are NOT shipped on approval and returns are only accepted in the  rare instances where I may have missed a flaw or described an item inaccurectly. The pictures form a major part of the auction descriptions and should be previewed closely before bidding.

4. Please do not ask me to file false Customs valuations or under insure items.

5. My packing is second to none but I cannot be responsible for uninsured damage or loss in shipping!

6. There are NO hidden packing or handling costs .. unless otherwise stated in the auction description, you will pay only actual shipping charges. On rare occasions [and with awkward or fragile items] I will charge for packing.

7. There is never a problem combining multiple auction items to save on shipping costs .. just ask!



Another auction from ip500

Powered by eBay Blackthorne 04.07.013

Questions and answers about this item

No questions or answers have been posted about this item.


Place bid

Time left:
Current bid:
(Approximately ##1##)
Import charges:
Your max bid:
Your max bid:
By clicking Confirm bid, you commit to buy this item from the seller if you are the winning bidder.
By clicking Confirm bid, you are committing to buy this item from the seller if you are the winning bidder and have read and agree to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase you maximum bid amount.
Resume bidding, if the page does not update immediately.
Place bid
Review and confirm your bid
Bid confirmation
FREE shipping
See item description
(Approximately ##1##)
(Enter ##1## or more)
(Enter more than ##1##)
Your max bid:
Increase max bid
Place bid
Confirm bid
Increase max bid
Change bid
, you've been outbid. Don't let it get away - bid again!
, you're the highest bidder on this item. Hope you win it!
, you're the first bidder. Hope you win!
, you're currently the high bidder, but you're close to getting outbid.
, this auction is almost over and you're currently the high bidder.
, you're the high bidder, but the reserve price hasn't been met.
Please enter your bid again.
Please enter a valid number as the bid price.
Enter an amount that is equal or greater than the minimum bid required. This can be found under the bid entry box.
Maximum bids can't be lowered once they're submitted.
This seller requires the buyer to have a PayPal account to purchase this item. Get a PayPal account here .
Your bid is greater than or equal to the Buy It Now price. We recommend you purchase this item via Buy It Now. If you still wish to bid, you may do so below.
Time left:
Current bid:
(approximately ##1##)
Your maximum bid:
(approximately ##1##)
Increase your maximum bid:
By clicking 1 Click Bid, you commit to buy this item from the seller if you're the winning bidder. Learn moreabout 1-click bid - opens in a new window or tab
(approximately ##1##)
Winning bid:
Starting bid:
Congrats! The auction has ended and you're the winner.
The auction has ended, but the reserve price was not met.
Sorry, the auction has ended and you were outbid.
Good news, you're the high bidder.
Sorry, you've been outbid.
You're the high bidder, but the reserve price is not met.
Please enter a higher amount than the current bid.
Maximum bids cannot be lowered once submitted.
Please enter a valid number.