A serial number is important evidence, not standalone proof

A serial number can help narrow down production period, factory or sequence, but it does not prove by itself that the rest of the item is original.

Check that its format and location are consistent with the model, then compare them with logos, hardware, date codes, panels, components and construction features.

A serial may belong to an item with replaced parts, may have travelled with a transferred component or, in problematic cases, may be reproduced.

Use it as one element in a converging body of evidence, not as a shortcut for authenticating the whole item.