Have a piece of Marconi test equipment from the mid-sixties
on its way, but not here yet. I think I'll need a power cord
for it, and the power connection on the back looks (from a
photo) like an XLR male connection.
EDIT: I should add, it appears to be a 3-pin.

Anybody with any information on this, or where to find a
connector if it's not an XLR?
Nelson

I doubt that it's XLR. Could be Amphenol.

Now that you mention it, Johnnysan, I checked Amphenol connectors
and took another look at this image:


Looking again at the photo, the pins seem too symmetrically spaced
to be a common XLR. Still look like Amphenol to you?
Nelson

Hi - that's a very fuzzy picture...but from what I can make out, I suspect this is one of those vintage Bulgin connectors. Sorta like the 1950s version of modern-day IEC. IIRC - they come in a small and large size.

Here's a view of what those bulgin connectors look like:

http://www.mullardmagic.co.uk/mullard/p ... tl121.aspx

As the link suggests, these are used on the famed ESL57 speakers and other vintage audio products. So to get these plugs - you will be competing with the audio crowd for a relatively scarce supply.

Suggestion: When I've encountered odd-ball connectors I generally try to swap them out with the IEC sockets if feasible. IECs can be had usually $1.50 each unless pulled off a dead PC, etc. (which cost time/trouble, but is doable). This weekend I will be doing just that for a Tek scope under restoration (broken 'plug' receptical on the back end). This also helps reign in the power cord varieties as well.

Good luck.

Thanks grid2...
$33 Cdn for a set of those makes an IEC socket look reeeal good!
I think I have one or two floating around in one of my bins.
Sorry about the photo quality... it's a small part of a much larger image.
At least now I have some alternatives in mind when I meet this thing
face to face.
Nelson