It's stamped 'Made in the 200th year of Amercian liberty.
Now Im shown a field to enter the serial number and the web site comes back with the model number, a photo of the model, the approximate ship date and a link … Ruger does not produce firearms in serial number order.
It is Sturm, not Strum.
It is not necessarily the very first serial number shipped, but it can be used to determine the approximate year your Ruger firearm was shipped.