The speaker in the back is a Hallicrafters R-46B, made from 1955 to 1959.

The short microphone on the right is a Turner 253, the one on the left is probably a Turner also but it is marked "SS".

The tall microphone on the left is a Astatic D-104 Silver Eagle, the one in the center is a basic D-104, and the one on the left is a D-104 with amplified T-UG8 stand. The D-104s started production in 1933, and the last one was made in 2001. I bought the Silver Eagle in this picture in 1985, and while I know the others are older I have no idea when they were made. I suspect both are from the late 60s or early 70s.