Semi-Dwarf rootstock resulting from a cross between ‘Moscow pear’ x M.9 or M.8 from the former Soviet Union. It is reported to be very cold hardy, and produces a tree size of about 85% of seedling. It is more precocious than the seedling and can be grown without support. It is moderately resistant to fire blight and crown rot. Other traits of note: Somewhat early bearing; moderately productive; well anchored; needs well drained soils.