* It's a typo: Perhaps you meant "Milano 925," which is a common mark indicating sterling silver made in Milan, Italy.
* It's a less common brand or artisan: There might be a smaller jewelry maker or brand that uses this name, but it's not well-known.
* It's a custom or one-off piece: The "milon" part could be a personalized inscription or the name of a designer who only made a few pieces.
* It's misremembered: The name or number might be slightly different from what you recall.
If you have a piece of jewelry marked "milon 926," providing more context could help:
* What does the jewelry look like? (Style, materials, etc.)
* Where did you get it? (Store, online, inherited, etc.)
* Is there any other information on the piece? (Other markings, hallmarks, etc.)
With more information, I might be able to give you a more accurate answer.