Tango 3-Handle: shape#3 - Keystone bowl

This shape is in no way associated with the other two keystone shapes. I say this for two reasons:
1. This bowl is found in only two colors and other keystone shapes are found in a variety of colors and decors.
2. These bowls in the two colors are signed with the script acid mark while all others are signed with the oval Czech mark.

So my thought is they were made by a different maker such as Kralik or they were a later production for Loetz when glass supplies were limited. You see, many 3-handle pieces come in many colors but about five shapes only come in green or orange (tangerine).
Time will tell if they are Loetz, Kralik or something else, but there is no denying they were made in the strict style of 3- handle pieces.

If by some miracle you see this shape in any other color I shall send you a nice bottle of Paso Syrah for a picture of it...