s-l400.jpg。Identification & Details • Brand/Maker: Coach • Model Style Number: 9791 (visible at the end of the serial code BØN-9791). • Bag Model: This style number corresponds to the vintage Coach Large Daypack / Backpack. • Material: Full-grain, thick glove-tanned leather, paired with a raw suede interior lining. Decoding the Serial Number (BON-9791) In late 1994, Coach transitioned to a unified alphanumeric coding system to specify production details: • B: Manufactured in February (the second letter of the alphabet). • O: Production year ending in 0 (in this context, 2000). • N: Factory plant location code. • 9791: The official Coach model style number for this specific backpack design. ®