Jim
You wont have any problem finding a 19 radio set . They were manufactured in large numbers the USA ... strange as the US army didnt use them..it was a Lend Lease arrangement apparently... Many were shipped to Russia ..the Germans captured and used them too.
Epay has them and parts regularly..but the prices are exorbitant in my opinion... there is a excellent 19 set web page here
http://www.qsl.net/ve3bdb/ where they give recomended prices for sets .
Mike