Two for one special. These porcelain insulators were used by the Missouri Pacific Railroad and are marked MP with an incuse hand stamp. The brown one is in a very near mint condition with a strong marking. The much more uncommon white one is in a very good condition with also a strong marking and with only some chipping to the inner skirt which of course does not show from display. These are U-152 in the Guide Book and the value stated is $14.00 to $27.00 each. As a bonus, they come with a full size color copy of a Missouri Pacific Railroad Company stock certificate. Price: $15.00, plus actual shipping.