were are you located? whats the dash # will determine the values and of course condition. if its a rusted up out of the ocean its not worth much. if its a runner could be big $$$ go to vintage v12s web site and email him. he posts here from time to time.
i always found this a interesting topic. not much info out there. i read there was a 2 row rotory engine made in ww1 by seimans. cant find any info on that. was it coupled? or 1 crank case?