Updated Blender version!
Low-polygonal models of a tragedy and comedy theater masks.
Modeled with Blender 2.58, rendered via Blender 2.74/Cycles (only #1,2 thumbnail images) and internal Blender renderer (other thumbnails). Masks have thickness. To reduce amount of polygons to halve, you can delete back sides of masks.
Only native BLEND format have scenes with lighting setups and shader materials (#1 and 2 thumbnails). FBX and OBJ formats submitted as shown on #3,5,6,8 and 9 thumbnail images.