I will probably never get a chance to own one of these but would love to for cool factor alone.
I am not a collector but of the Cox engines I do not hav e but would love to own are the RR1, Tee Dee 010 and 020 and Tee Dee .015
I place the Tee Dee .020 and .15 higher on my list as I would use them but the .010 and RR1 would just be so cool.
Robert