Date   : Mon, 31 Oct 2005 14:02:45 +0000
From   : Jules Richardson <julesrichardsonuk@...>
Subject: Re: Guess age from serial number?

David Harper wrote:
> "Annihilannic" <annihilannic@...> wrote:
> 
>> I have just started playing with one that a friend gave me last year;
>> Ser# 02-B01-213287, with an Issue 7 board.  I presume it's one of the
>> more common garden varieties?
> 
> 
> Most later Model B's had the Issue 7 board. (It did seem a bit more 
> reliable than the earlier ones.)
> 
> BTW, can anyone remember how many issues of motherboard there were? I 
> can recall early beebs with Issues 1 to 4 and then Issue 7. I don't 
> recall Issues 5 & 6 ever being used (or were they for the Electron??)

I'm almost certain that 5 & 6 never happened; I think Pete Turnbull 
knows the story there (as has told it to me in the past, and I've since 
forgotten, and I don't have any useful archives to hand ;)

I'm not certain I've ever seen an issue 3 either actually. 7 is by far 
the most common in my experience, with 4 next.

> IIRC they called the board for the B+ "Issue 10" and then they started 
> again with the Master, but I may well be wrong here.

Hmm, not sure. The only B+ photo I have is the one in my ACW, so there's 
a bazillion cables in the way.

cheers

Jules