Build Your Own Burroughs 205 Register

Modules for a Datatron come along only rarely, nowadays.  I can recall seeing them occasionally in surplus stores such as "G. I. Joes," in Portland, back in the late '60s - no doubt for just a few bucks.

The last one I saw trade on e-Bay, about five years ago, went past $150 the day before it finally sold.

But - if you act now!  There are three of the most common packages, the 50550 toggle module available for bid on eBay.  There were over 50 of these modules in the typical B-205.  They are labeled as "40" in the photo on this webpage on my Datatron site.

Here's the link to eBay.