ellipse form postmark (at3lab) |
ellipse form postmark with line segment at top (at5lab) |
ellipse form postmark with chord and rec-tangle (at7l2ab) |
ellipse form postmark with short bridge (at2l2ab) |
ellipse form postmark with short bridge and line (at6lab) |
ellipse form postmark with short bridge, arch and line (at5lab) |