Proof I'm not a very good container plant gardener.
Here are ripe fruit from the 3 plants (none should have the cross-pollinated seed in them):
left to right, Buisson, Bloody Butcher & Kimberley
The Buisson is usually a good 4 ounces with many at 5 ounces in my open garden. This one is
maybe 3 oz and the biggest on the plant. That Bloody Butcher is unreasonably small - must be about 1 oz, they are usually twice that size or larger. The Kimberley that I grew once before had 5 oz fruit! I think something was wrong with the seed. It is supposed to be a 2 to 3 oz tomato and this one might be that big. The Kimberley seed from a couple years ago was from a difference source than this one. Anyway, at least I have kept the plants alive thru the year

.
There are some tiny green fruit developing from the blossoms that I tried to move pollen to. I wonder if there's any chance . . . The one I'm most sure I got pollen on
seems to be developing (hasn't fallen off yet :/). A flower I'm less confident of has a pea-size fruit! I guess I won't know until I grow some seedlings and see if I've got any regular-leaf plants from this potato-leaf Kimberley.
Here is what Tatiana says about the Kimberley heritage: "Developed in the mid-1980's by John de Rocque of Kimberley, BC, Canada, supposedly from a Siberia x Tiny Tim cross, selected for earliness, hardiness, and quality. It has not been confirmed that Siberia and Tiny Tim were the real parents of Kimberly, and genetically it does not make much sense, two regular leaf and dwarf/determinate varieties are unlikely to produce a potato leaf indeterminate."
You see? That little tomato is a mystery in and of itself!
Steve