Bertoni or Sedesma

[Fishyfins]

Hi guys!
I picked this pin up yesterday from a local charity shop. I payed a few pence for it, so im not so bothered if it turns out to be something not that desirable. I posted pics in a FB pin group for identification. I was initially told this was a Bertoni pin (pinpics #2171), since it says "Bertoni-Mi" on the back. However, another person has suggested it could be a "Sedesma" pin which are undesirable pins. As i say, im not too bothered about it, but ive been trying to learn more about pin identification, so new information like this is useful. I cant find much information online about Bertoni or Sedesma pins. How can someone tell the difference between them? And does anyone have any background info on them, like when they were in production and stuff?

Thanks
Fishy

 

[pretty_Omi]

If it says Bertoni, then it's likely a Bertoni! Bertoni pins are made of metal, but are considered a "soft enamel" so you don't get the same look as the other Disney pins. Sedesma pins will says Sedesma, but they feel like they are made out of plastic.