Marshall Super Charger Info

I traded for a Marshall 200 Super Charger. Can anybody tell me what these were used on and what they are worth? It is in good condition and turns freely. Very cool piece. I appriciate your help. Thanks, Tim

 

Could you post a pic??? The Marshal blowers
I've seen were all pretty small - about the size
of a 2-or-3-53 Detroit blower - and originally
used as aircraft cabin pressurization blowers
on some WWII and immediate-post-WWII
British military aircraft. Across the pond, they
were commonly available surplus in the 1950's,
and they most often used for supercharging
MG's and other similarly-sized 4-cylinder sports
cars. A few racers even adapted them to Vincents
and other motorcycles.

Mart3406
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Do you want to sell it ? I've always wanted one just for the name sake

 

A J-75 Marshall was in a box of parts when I bought a '52 MGTD about ten years ago. After restoring the TD, I rebuilt the Marshall to sell but it ended up on the TD instead. It does improve the upper end torque and gets a lot of attention when the hood is open, (But not the attention my other TD with a 60hp flattie gets). Marvin

 

Here are some photos. Built in 1947...