That first one looks a lot like my 1942 UD Heavy 10R, 199-Y. The giveaway between the 9/10K and the Heavy is that funky spindle lock handle on the tailstock, but the 11 had that as well. The dataplate should be on the gear cover on the left end. 10R was a 199 for engine, 8199 for toolroom; 187 for the 10L engine, 8187 for the 10L toolroom.
