[GreenKeys] specialised 33 KSR Teletype for Burroughs B5500 SPO

[Nigel Williams]

Back in the 1960s/early 1970s Burroughs produced a large system known
as the Burroughs B5000 family (with later variants B5500 and B5700).

The early deliveries shipped with a modified electric typewriter
console from Smith-Corona, but at some point Burroughs switched to
using the venerable 33 KSR but modified it with additional controls on
the right hand side.

A reasonable picture showing the controls is below:

http://www.archives.act.gov.au/__data/assets/image/0003/865344/Burroughs-computer.jpg

The controls are labeled as per the screenshot at the top of the page here:

http://www.retrocomputingtasmania.com/home/projects/burroughs-b5500

I am wondering if anyone has ever come across one of these?

If you have pictures or an actual unit I'd be glad to know about them
please. I'm mainly interested in photos and any details of the
electronics that might have been added to support the additional
buttons/indicators.

thanks,
nigel.