Haha!....thanks for the Warning Jim....I like to find good deals and nothing is jumping out at me right now on eBay...
I did find a 100 year anniversary D10 but that model does not have a throttle valve as far as I can see....could a handy guy add one? Seems a fairly simple thing...
Not really sure that is a great idea...from my shopping I kinda have my heart set on a Wilesco D20...or possibly a D16
The D18 ,D20,D21,D22 all share the same (larger) boiler than the D16 , actually twice the capacity.