On Sun, Jan 26, 2020 at 8:51 PM n4buq <firstname.lastname@example.org> wrote:
Most of my Tek equipment was built in Guernsey, and it all has serial
numbers starting with 1. My 535A is right in front of me, serial
number 101936, and my 7904A (built in Guernsey even though I bought it
in the USA) is (I think) 100084.