Old Man, Sir!
Beautiful work, doubly so considering they are in 1:72. I too am "old" (at least in a chronological sense) and wouldn't dream of working in the small scale. I gave it up in my 40's and, after a run in 1:48 Scale am now a devoted 1:32 Guy; hopefully my fingers won't grow any fatter or eyes get fuzzier or I may find a very reduced choice of subjects in 1:24 Scale!
Very enjoyable to view and my compliments on your obvious talents. Glad you joined.
Cheers,
Lance