Ruger Number One, 1-A, Light Sporter, .357 magnum cal. single shot rifle.  Serial #132-48612.   Excellent condition.  22” barrel has excellent shiny bore and blue.  Receiver has some light surface rust from storage on left side.  Lever is 100%.  Stock and forearm have excellent finish and checkering - a couple of tiny handling marks.  Grip cap has some corrosion around edge.  Rear sling swivel has light corrosion.  In original box. Appears unfired. Rare caliber in the #1.