Paolo Soprani history

[Thanos]

Hi friends and colleagues
I would like to ask about the three emblems of Paolo Soprani, (red, blue, black) and how can i see the era, the quality and check if they are original or knock outs from China.

 

[Dingo40]

I'm a bit late responding (I was hoping someone more knowledgeable would respond).
I had only heard of/seen the red and the blue badges/logos, not any black ones.
As far as I have heard, the blue version is the older and the one preferred.
In my vocabulary, a "knockout" is a stunner, a knock-off is an imitation.
I can't comment on Chinese knock-offs: Sorry.

 

[Dingo40]

Waddaya know!?
This appears to be a black one (or a blue one looking black)?

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And, yes, here's another!
You live and learn every day!

https://accordionscanada.com/products/paolo-soprani-musette-piano-accordion-41-keys-120-bass-black

This is black:

Maybe someone knows something about this business of the significance of the colour of the logos?