Here is the pride and joy of my location lighting kit. It’s an Armatar 100.
Back in the 1980s a TV repairman in New Jersey I believe churned these out (Joseph Armato IIRC). It’s essentially a Vivitar 283 with a bare bulb added, the stock battery and flashbulb compartments stuffed with extra capacitors (more power!), the stock base removed and replaced with a HH sync connector and a metal cold shoe with 1/4 20 threads in it.
On this one you can see I replaced the stock (surprisingly