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It is a beautiful Fendi Canvas tote bag. Such vintage designer bags are being offered at auction on a regular basis.
The most popular brands for second hand designer accessories is Chanel, Louis Vuitton and Yves Saint Laurent. However Fendi bags in good condition also have many costumers. It is a lovely bag with a smart design. I have not been able to find any information about the bag nor anything that could clarify the Fashion show information you have found. It may have been made for a particular event or a limited edition however usually Fendi and other designer brands have information about things like that on their website.
The tote bag appears to be in very good condition with minor og no signs of wear and use. This is very good for a potential price.

I believe that it would attract the attention of both collectors and dealers if it came up for auction.
The estimate provided is for a well-advertised specialised online designer accessories auction, where I believe the tote bag has the best chance of realising its fullest potential. However, there is no measurement for the sentimental value you might attach to the Fendi tote bag. Retail "asking prices" can be higher and vary.

Please let me know if you have any additional questions. I’m happy to help.
Thank you