Actually, it's an very late date C8080A. Probably one of the last batches produced.
As for "why" is it more valuable than a normal white ceramic C8080A, that's like asking "why" is a
"rare" purple Beanie Baby doll worth $500 when the "common" white one is only worth $1.
It would be the same thing as if a factory made "Red" IMSAI 8080 showed up for sale on EBAY and there were only two known to exist. There would be collectors willing to pay more for it than the "common" blue IMSAI 8080.
It's all supply and demand. As more and more people get into chip collecting it is starting to drive up the prices
on the harder to find chips.
For example, these are the prices being asked (and paid)
for some of the harder to find old Intel and Intel second source chips in NOS condition:
Some of the valuable early Intel chips include:
Intel C4004 - $200-$300
Intel C4004 with gray traces - $250-$500
Intel C4004 prototype with
gray traces and wood
laminate cap - $3000+ (beware of fakes)
Intel P4004 gray DIP - $150
Intel C4040 - $300-$500
Intel P4040 gray dip - $150
Intel G8008 - $300+ ('G' prefix is not a typo)
Intel 8008 - $300+ (No prefix is not a typo)
Intel C8080 - $1000+
Intel C8080-8 - $600+
Intel D8080 - $600+
Intel P8080 - $400+
Intel C3101, C1101, C1103 - $150-$300
Intel C8085 - $350 (No 'A' suffix)
Intel C8085A or C8086 - $250
Intel C1702 - $250 (No 'A' suffix)
Some of the valuable Intel 2nd source chips include:
Microsystems International
MF8008 - $300
Siemens
SAB8008-1C - $300
SAB8008-1D - $300
SAB8008-2-P - $300
National Semiconductor
INS4004D - $250
If you have any of these chips and you want to get rid of them, send me
an email.
----- Original Message -----
From: Russ Blakeman
To: classiccmp_at_classiccmp.org
Sent: Sunday, November 18, 2001 7:51 PM
Subject: RE: Intel C8080A chip brings $565 on EBAY
Excuse my ignorance but even at the fact that it's a purple ceramic - is this like a prototype or one of Intel's first runs or something that makes it worth more than most new processors?
-----Original Message-----
From: owner-classiccmp_at_classiccmp.org [mailto:owner-classiccmp_at_classiccmp.org]On Behalf Of John Galt
Sent: Sunday, November 18, 2001 4:03 PM
To: classiccmp_at_classiccmp.org
Subject: Re: Intel C8080A chip brings $565 on EBAY
Link:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1296402506
----- Original Message -----
From: John Galt
To: classiccmp_at_classiccmp.org
Sent: Sunday, November 18, 2001 4:27 PM
Subject: Intel C8080A chip brings $565 on EBAY
Well, it was one of only two known rare purple Intel C8080A's
I am always in the market to buy rare old Intel microprocessors and support chips.
If you have any old Intel 4004, 8008, 4040, or 8080
microprocessors laying around, I want them.
Also buying old EPROMS (C1702's, etc), RAM (C3101, C1101, C1103, etc), clock chips, etc).
Contact me at gmphillips_at_earthlink.net
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