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It is a beautiful Italian Dell'ga travel bag. Such vintage handbags and trolleys are being offered at auction on a regular basis.
I am not quite sure if there is some kind of strap or stick to hold the bag if the wheels are used. However the design of the bag is very smart and modern. I would say that it was made within the past 20-30 years. The colour is bright and lovely and I think it would go well with today's colourful fashion trends.
What it was used for in particular is hard to tell, but because of the wheels it is some kind of trolley/luggage bag used for travelling and could be a carry-on piece of luggage. It appears to be in very good condition.

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 accessories and bags auction, where I believe the leather bag has the best chance of realising its fullest potential. However, there is no measurement for the sentimental value you might attach to the Dell'ga. 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