ZX81 with a serial number...

ZX80 / ZX81 hardware and software offered for sale or swapping
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1024MAK
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ZX81 with a serial number...

Post by 1024MAK » Tue Dec 10, 2013 6:45 pm

ImageThis was posted on World of Spectrum, but I thought members here may be interested http://www.ebay.co.uk/itm/111235944876 (Not being sold by me).

All my Zeddies lack any form of serial number, and I have issue 1 and issue 3 boards, and one of my issue one boards has a ULA with a date code of 8111, so week 11 of 1981.

Does anyone know when Sinclair started using serial numbers on ZX81's?

Mark

inaki
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Re: ZX81 with a serial number...

Post by inaki » Fri Dec 13, 2013 9:34 pm

Here a ZX81 with ULA 82-45. No serial number.

gozzo
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Re: ZX81 with a serial number...

Post by gozzo » Sat Dec 14, 2013 1:26 am

I don't think any of my zx81's (I have 5 or 6 lurking around) have a serial number like that on them, but spectrums certainly do, maybe a very late model, but then mine original one probably was, bought new christmas 1983...(unless it was old stock?)

XorA
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Re: ZX81 with a serial number...

Post by XorA » Tue Dec 17, 2013 12:30 pm

Out of 7 zx81s here, one has a serial number like that!

It is unfortunately packed for moving house so I can't photograph it!

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PokeMon
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Re: ZX81 with a serial number...

Post by PokeMon » Tue Dec 17, 2013 2:38 pm

Maybe they decided to introduce a serial number when reached the one millions sale. :mrgreen:

Lardo Boffin
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Re: ZX81 with a serial number...

Post by Lardo Boffin » Thu Jan 26, 2017 12:20 pm

I have just ordered a zeddy off eBay (I don't seem to be able to help myself when they are cheap) and it has a serial number as below. I did a quick search to see how common these were and noticed this thread so thought I would add to it!
IMG_5482.PNG
(2.31 MiB) Downloaded 629 times
I can't help but notice that mine is a slightly lower serial number.... :lol:

The PCB looks like it might be green? Does this make it an issue one?

I guess I will find out in a few days...
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
Iss 3 ZXVid
TS 1000 iss 3, ZXPand AY, ZX8-CCB, ZX-KDLX & ChromaSCART
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Various Spectrum 48ks plus a DIVMMC future and SPECTRA

Moggy
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Re: ZX81 with a serial number...

Post by Moggy » Thu Jan 26, 2017 1:23 pm

Lardo Boffin wrote:I have just ordered a zeddy off eBay (I don't seem to be able to help myself when they are cheap) and it has a serial number as below. I did a quick search to see how common these were and noticed this thread so thought I would add to it!

IMG_5482.PNG

I can't help but notice that mine is a slightly lower serial number.... :lol:

The PCB looks like it might be green? Does this make it an issue one?

I guess I will find out in a few days...
More than likely, but early UK issue threes where green also.
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Lardo Boffin
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Joined: Sat Nov 26, 2016 2:42 am

Re: ZX81 with a serial number...

Post by Lardo Boffin » Fri Jan 27, 2017 12:41 pm

It's an issue one. Photos on the different ZX81s thread viewtopic.php?f=7&t=2153&start=30

Lardo
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
Iss 3 ZXVid
TS 1000 iss 3, ZXPand AY, ZX8-CCB, ZX-KDLX & ChromaSCART
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Various Spectrum 48ks plus a DIVMMC future and SPECTRA

Lardo Boffin
Posts: 915
Joined: Sat Nov 26, 2016 2:42 am

Re: ZX81 with a serial number...

Post by Lardo Boffin » Sun Oct 07, 2018 9:31 am

I have been havng a conversation with someone on eBay about serial numbers on a zeddy (on the case) and he suggested that they were introduced for WHSmiths.

I can certainly see the logic behind the suggestion - a large retailer would want traceability and easier tracking of warranty failures and returns which you don’t get without a serial number. I would expect ‘Smiths to have been a major seller of these once they were established in prebuilt form. I think I have refurbed and sold 5 or 6 with receipts so far - 1 was from Menzies all the others from ‘Smiths.

Anyone heard of this before and know whether it is true?

Edit - I have only had one zeddy with a serial number on the case and only seen a few on eBay so they must have been fairly late in the production life of them to be so rare. Maybe when they started selling Spectrums with serial numbers on they decided Sinclair must be capable of doing them and insisted?
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
Iss 3 ZXVid
TS 1000 iss 3, ZXPand AY, ZX8-CCB, ZX-KDLX & ChromaSCART
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Various Spectrum 48ks plus a DIVMMC future and SPECTRA

Lardo Boffin
Posts: 915
Joined: Sat Nov 26, 2016 2:42 am

Re: ZX81 with a serial number...

Post by Lardo Boffin » Sun Oct 07, 2018 10:36 am

Moggy wrote:
Thu Jan 26, 2017 1:23 pm
Lardo Boffin wrote:I have just ordered a zeddy off eBay (I don't seem to be able to help myself when they are cheap) and it has a serial number as below. I did a quick search to see how common these were and noticed this thread so thought I would add to it!

IMG_5482.PNG

I can't help but notice that mine is a slightly lower serial number.... :lol:

The PCB looks like it might be green? Does this make it an issue one?

I guess I will find out in a few days...
More than likely, but early UK issue threes where green also.
Just spotted the significance of that board. A green issue three! Just when I thought I had most of the variants...
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
Iss 3 ZXVid
TS 1000 iss 3, ZXPand AY, ZX8-CCB, ZX-KDLX & ChromaSCART
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Various Spectrum 48ks plus a DIVMMC future and SPECTRA

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