Hello Richard, and welcome to NSR-WORLD.
All NSR250R engine numbers are prefixed MC16E.*
If you check here, you will see that the engine number falls within the range for 1994.
https://manuals.nsr-world.com/view-94-96-parts.php
*HRC specific cases are stamped NH3, and "new" cases were supplied blank, and intended to be stamped by an official Honda franchise upon first use.
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Andy.
NSR-WORLD.COM
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