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 Post subject: CCa tube date info
PostPosted: Sat May 13, 2017 3:06 pm 
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Location: Ajax, ON, CA
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I bought a pair of CCa tubes with my preamp a few years ago, and while they tested as new on a CAM member's 2 testers. I have no idea of the manufacture date. I have attached a few pictures and if anybody could tell me, I would appreciate it.

If you need more info or pictures, please let me know.

Thanks in advance for your help.


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 Post subject: Re: CCa tube date info
PostPosted: Sat May 13, 2017 4:11 pm 
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Location: Waterdown, ON, CA
Kartmn wrote:
Attachment:
IMG_0635.JPG
Attachment:
IMG_0634.JPG
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IMG_0633.JPG
Attachment:
IMG_0633.JPG
I bought a pair of CCa tubes with my preamp a few years ago, and while they tested as new on a CAM member's 2 testers. I have no idea of the manufacture date. I have attached a few pictures and if anybody could tell me, I would appreciate it.

If you need more info or pictures, please let me know.

Thanks in advance for your help.


Hello Kartmn. It is very difficult to ascertain from your pics.

The earlier CCa's had a plate attached to the getter post with codes stamped in the plate and have 2 getter supports.
The last version of the cca had a single getter support. If you can take pictures of the getter it would be much easier to identify the date of manufacture.


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 Post subject: Re: CCa tube date info
PostPosted: Sat May 13, 2017 4:35 pm 
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Location: Ajax, ON, CA
I cannot find any date codes on the getter. I will take a couple more pix to see if that helps.
Thank you.

-- 13 May 2017 19:42 --

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does this help? pictures look better and sharper on my phone. let me know.


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 Post subject: Re: CCa tube date info
PostPosted: Sat May 13, 2017 5:47 pm 
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Location: stirling, ON, CA
70's tubes have a plate with date on, inside tube. Yours is 60s tube and it should have a date etched on lower side part of the tube.very hard to see sometimes and need a magnifying glass. There should be a only one number you should see and that should be your last digit in year in 196?


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 Post subject: Re: CCa tube date info
PostPosted: Sat May 13, 2017 5:55 pm 
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Thank you very much for your help.


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 Post subject: Re: CCa tube date info
PostPosted: Sat May 13, 2017 6:00 pm 
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having owned only a handful of siemens tubes and by no means an expert but given no date tag, no acid etch that only leaves a paint code.

since the labels look to be in very good condition there should be some sign of a paint code if ever there was.

do these have the cross seam on the top of the glass?


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 Post subject: Re: CCa tube date info
PostPosted: Sat May 13, 2017 6:03 pm 
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Yes they do.


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