Oldest machine

[Jules Richardson]

Wai-Sun Chia wrote:
> curious to know of any operational PDPs prior to the
> classic-8s? (the PDP-1 in CHM doesn't count! :-)

Why not though? Assuming it's a faithful restoration using period parts [1] 
(rather than emulating bits using modern parts) and it works then it should 
qualify...  I have no objections to museum machines being mentioned if the 
poster is directly connected with that museum [2] (nor would I mind hearing 
about ancient hardware that people are still using in a commercial capacity :)

[1] Someone told me of one museum with an old machine where the core memory 
had been torn out and replaced with modern DRAM, but I can't recall what 
machine or where - to me though it's non-original at that point because it's 
not a restoration faithful to the original hardware.

[2] I've mentioned our early 60's Marconi in a museum capacity. Oldest machine 
in my private collection is a lot newer - probably my Acorn System 1, circa 
1979. I don't have room for big stuff, and the older a machine is the bigger 
it tends to be :-)

I suppose I'm just curious as to what systems from the 1940's to 1970's have 
survived, as most of the talk on here seems to be of more recent (1970's and 
1980's) hardware and very little gets said about the earlier stuff.

cheers

Jules