Red slicer tomato. Bushy, semi-determinate "vines"; staking optional. 8-10oz fruits.
I THINK this might be a variety from Alan KapulerĀ of Peace Seeds.
Several packs available; contact Kalkin to claim one. As of this posting (April 27th), it's late to start tomato seeds but someone with a long growing season could do it, or just keep them until next year. Tomatoes are usually started indoors several months before actually planting them outdoors.