This dynomotor power supply(PE-103A) was used in vehicular installations such as Jeeps, Half Tracks etc as part of the SCR-284. It is in good shape though it could use some cleaning from storage grime.
I have no idea if it works or not. I promptly answer all questions. If you have any doubts ask. The item "Military Radio Dyno Power Supply PE-103 BC-654 SCR-284 Transmitter Receiver Jeep" is in sale since Thursday, August 23, 2018. This item is in the category "Consumer Electronics\Radio Communication\Parts & Accessories\Power Supplies".
The seller is "d-fowler" and is located in Cross Timbers, Missouri. This item can be shipped to United States.