Typically feature a 6 or 7-digit numeric code on a silver or white foil label.
Since Nikon does not offer a public "serial number decoder" tool, you must use four alternative methods. Here is the step-by-step process. Nikon Microscope Serial Number Lookup
Often located near the mounting point or on the back. Typically feature a 6 or 7-digit numeric code
Before you can perform a lookup, you must locate the identification plate. Nikon microscopes typically have the serial number stamped or printed in one of three primary locations, depending on the model and age: Nikon Microscope Serial Number Lookup
Depending on the model and vintage, the primary serial number—usually belonging to the microscope stand—can be found in several standard locations:
You can estimate age based on the company's branding. Early models (pre-1960s) often feature the "Nippon Kogaku"