Approx. 28 days old, from the Ziegler series of models No. 3, in SOMSO-Plast®. The model shows the most significant structures of an embryo about 28 days old. The left half of the body is to some extent shown in median cross section so that the different positions of the organs can be recognised in their topographical relationships - characteristic for this embryo stage. In one piece. On a green base. Height: model 17 cm.