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 Post subject: Re: HMV 102 production numbers
PostPosted: Mon Oct 15, 2018 2:52 am 
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Victor III
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F. Depero, "Grammofono", 1923.
Joined: Thu Feb 24, 2011 4:19 am
Posts: 727
Location: Italy
You can add 26029 to the list of 102s with universal autobrake.


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 Post subject: Re: HMV 102 production numbers
PostPosted: Fri Oct 19, 2018 12:40 pm 
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Victor Jr
Joined: Sat Oct 13, 2018 7:59 am
Posts: 7
HMV serial numbers are a bit of a minefield, as the system of numbering changed fairly frequently. The system introduced in 1930 (for all models, including the 101) had 10 digits, starting with the model number, and with '0's in the middle to allow for succession. This system carried on into the early 1930s (probably until 1934), although the 102 has 9 digits rather than 10. As far as I know, the numbers within this system for any one model are sequential, so the original 102 presumably started at 102000001, though 4744 is the lowest I have seen. The highest number on my list is 102023??? (last 3 digits missing, can't remember why.)
The lowest I have for 102A (with No 6 brake) is 102041955. But the No 6 brake was made available as a conversion kit for the original model, so there may be some apparent 102a's around with lower numbers than would be expected.

No records survive of these numbers, so it is merely a matter of recording examples seen. The serial numbers from 1936 are on record, and there is no logical sequence; random blocks of numbers were allocated to various EMI models in advance, so the numbers are of no use for estimating date. They can be found by reference to the original list, though this is unnecessary because those coded dates referred to by Ian Calderbank give the the date. (The 'B', by the way, is the code for Acoustic Gramophone.)


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 Post subject: Re: HMV 102 production numbers
PostPosted: Thu Nov 01, 2018 9:24 pm 
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Victor Jr
Joined: Fri Mar 17, 2017 2:52 pm
Posts: 17
My MOS 102D serial is B/9 6319, and it has the universal autobrake. That thing is a wonder.


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 Post subject: Re: HMV 102 production numbers
PostPosted: Fri Nov 02, 2018 3:03 am 
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Victor II
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Floating Downstream
Joined: Tue Feb 20, 2018 12:52 pm
Posts: 246
Oedipus wrote:
HMV serial numbers are a bit of a minefield, as the system of numbering changed fairly frequently. The system introduced in 1930 (for all models, including the 101) had 10 digits, starting with the model number, and with '0's in the middle to allow for succession. This system carried on into the early 1930s (probably until 1934), although the 102 has 9 digits rather than 10. As far as I know, the numbers within this system for any one model are sequential, so the original 102 presumably started at 102000001, though 4744 is the lowest I have seen. The highest number on my list is 102023??? (last 3 digits missing, can't remember why.)
The lowest I have for 102A (with No 6 brake) is 102041955. But the No 6 brake was made available as a conversion kit for the original model, so there may be some apparent 102a's around with lower numbers than would be expected.

No records survive of these numbers, so it is merely a matter of recording examples seen. The serial numbers from 1936 are on record, and there is no logical sequence; random blocks of numbers were allocated to various EMI models in advance, so the numbers are of no use for estimating date. They can be found by reference to the original list, though this is unnecessary because those coded dates referred to by Ian Calderbank give the the date. (The 'B', by the way, is the code for Acoustic Gramophone.)



Just to mention, there was a lower number than 4744 mentioned on the following link (No. 2879) for you to see - also mentioned earlier in this thread:

http://forum.talkingmachine.info/viewtopic.php?f=14&t=36580


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 Post subject: Re: HMV 102 production numbers
PostPosted: Fri Nov 02, 2018 10:34 am 
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Victor Jr
Joined: Sat Oct 13, 2018 7:59 am
Posts: 7
Thanks - duly added to my list. I would particularly welcome news of any number under 1000.


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 Post subject: Re: HMV 102 production numbers
PostPosted: Fri Nov 02, 2018 10:44 am 
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Victor Jr
Joined: Sat Oct 13, 2018 7:59 am
Posts: 7
B/9 is the correct date code for a 1945 MOS 102D. But I am intrigued as to how a No 5 brake could be fitted; it would need a 271-C motor (with extended intermediate shaft and cam to operate the brake), and I am not sure how that would work with a wood motor board.


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 Post subject: Re: HMV 102 production numbers
PostPosted: Fri Nov 02, 2018 11:21 am 
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Victor IV
Joined: Mon May 13, 2013 2:04 pm
Posts: 1402
Oedipus wrote:
B/9 is the correct date code for a 1945 MOS 102D. But I am intrigued as to how a No 5 brake could be fitted; it would need a 271-C motor (with extended intermediate shaft and cam to operate the brake), and I am not sure how that would work with a wood motor board.



Marriage ? perhaps the owner will post some pictures ?


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 Post subject: Re: HMV 102 production numbers
PostPosted: Fri Nov 02, 2018 5:00 pm 
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Victor III
Joined: Sun May 27, 2012 2:38 pm
Posts: 643
Location: United Kingdom
I'm pretty sure the OP is mistakenly identifying the autobrake. The "universal" brake is the No.5, which was fitted to the very first 102s, and was discontinued after a very short life. Apart from the fact that an MOS 102 has a wooden motorboard, to which a "universal" brake cannot be fixed, because of the boards' thickness, I doubt HMV would start fitting a brake to the MOS 102s that they had discarded as unreliable some 13 years previously!


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