i will cross my 914 wentzell x with your 715 dill,and split the seed,50/50, if any one out there has a 715,and you do not want half the seed,then i could give you a 974 mettler and 5 seed from the 2 914 x 715 cross that i will do,i will not be growing 914 for size,there will be at least 4 fruit grown on each plant,914 x 560 larue,790 daletas,1097 .5 beachy,963 stucker,845 bobier,780 eaton,that looks good 560 x 790=1097.5 x 963==845 x 780.
there is a 715 up for auction at Howard Dill's upcoming auction (see odds and ends link at B.P. com) It's in a lot with a few other seeds. Might be in the $150 range is my guess._