I have no exactly this bag, but I know it. I wear for many years a few Lancel bags "bucket type": Premier Flirts, Elsa, Bucket (very similar to Ninon bucket) and Cabas (back pack) made of this type of leather and quality is perfect. The leather is very strog, soft, and let say "massive", very good and stable coloration. Precisely processed details and visibly high-quality sewing, complemented by hand stitches.
Looks luxurious and expensive. Very good ratio money for quality!
Some points to pay attention:
- Leather in pretty hard in the begining. Gradually softens when worn. It should be treated with a cream to prevent deformation.
- I recommend storing it in a hung condition to maintain a nice shape.
- I noticed loss of color saturation in very light shades.

- The horns are suffering! Frequent maintenance of the nano-cream can reduce this, but with frequent use, count with it.
But overall, it is a very high quality bag with a timeless design and classic high-manufactured material.