I have been given, from what I understand, a rare watch making kit from Alfred Brodmann by Ventura. I've dug around on the internet but can't really find much about the history of this or the perceived value. Was the intention of this to be a hobby kit of sorts where people were actually going to build their own watch or was this intended to be more of a collectors item?

Anything from $1,200 to $200 can be found on the internet so i'm curious overall.
Thank you!
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