Just got these. Far left in order- is what appears to be an 1 RCA, 2 NOS NIB Yugoslavian GE's, 3 USA made GE's, 1 English made Amperex,! Mullard and 1 ribbed Telefunken. When I bought the NOS NIB GE's I didnt realize they were Yugoslavian! Probably Ei's or something.....well time to try em out.