[Hammarlund] Age list of HQ-129-X?

[Richard Knoppow]

    It appears that Collins issued serial numbers just before 
sale so the number is not strictly related to the order of 
manufacture. Some manufactures were very sloppy about serial 
numbers. For instance the company that made the famous Speed 
Graphic cameras change numbering methods a couple of times. They 
also issued duplicate numbers following WW-2. One can 
approximately date older cameras but not newer ones. Another 
serial number mess is Bausch & Lomb. They seem to have issued 
separate serial number series for each type of lens. I have a 
list someone was kind enough to send me of microscope objectives, 
it has no relationship to camera lenses plus the numbering of 
different types of camera lenses seems to have been separate. On 
top of that they changed their whole scheme of numbering sometime 
in the late 1940s.
    I suspect that some manufacturers deliberately scrambled 
their serial numbers to keep secret how many items they were making.

On 3/20/2020 2:42 PM, manualman at juno.com wrote:
> It's anywhere from 67 to 75 years old.
> If the thing still has original parts (tubes, capacitors etc.), looking
> at their date code might give you a clue.
>
> A Google shows at least two threads where HQ-129X serial numbers came up
> along with a generalization of "serial numbers" to manufacturing dates".
> It seems from some that were around during the boatanchor heydays of
> manufacture, there was no correlation of serial numbers to actual
> manufacturing dates with many manufacturers. Maybe 70 years later it's a
> curious bit of information; I guess back then they didn't care.
>
> Links for info
> Watch for link wrap around
>
> https://www.antiqueradios.com/forums/viewtopic.php?f=5&t=188957
>
> http://amfone.net/Amforum/index.php?action=printpage;topic=34827.0
>
> Pete, wa2cwa
> www.manualman.com
>
>
>
> On Fri, 20 Mar 2020 17:17:14 -0400 Ray LaRue <w4byg at att.net> writes:
>> I have acquired a rather nice HQ-129-X in good physical condition.
>> I
>> have not yet recapped it but will get to it shortly.  I am pairing
>> it up
>> with a nice rebuilt Johnson Ranger for an operating "classic"
>> station,
>> to go along with my rice boxes.
>>
>> Is there a list of serial numbers online where I could estimate it's
>>
>> age?   The serial number on this one is #14574, stamped into the
>> back of
>> the chassis.
>>
>> Your attention is appreciated.
>> Ray, W4BYG
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL