what is it?

[Bob Phillips]

I know there has been much discussion about #19 sets but there seem to numerous variations on the accessories used. So look at these photos and tell me what you recognize.
ws19A.jpg
I wonder if the ws217 mike on the top right is US?
The handset on the right looks like field telephone, could it also be radio?
The mike on the top left uses a 4 prong connector not a quarter inch phone jack
ws19B.jpg
standard 19 set parts? the headset top left may be US
ws19C.jpg
Mk2 dog bones, the one on the left is 4 prong both ends
ws19D.jpg
top cable is 12 to 12 prong, secons appears to be power input cable for power supply.
All input greatly appreciated!