Here are six nice porcelain pieces for one price.

Two incuse marked MP (one on the dome and one on the side dome) -- Nice readable markings

Two incuse marked G.P.CO. (One on the skirt and one on the dome) -- Nice readable markings

Small unmarked mini-beehive pony -- probably OB, nice glaze

Embossed OB cable top -- nice early light glaze

All six for $22 including shipping in the US!!