An original series Star Trek prop sold this weekend at Julien’s Auctions for a whopping $231,000. Only seen once in the entire series run, this rare phaser rifle prop was actually used by William Shatner in the series’ second pilot episode “Where No Man Has Gone Before” (actually airing as the third episode of the first season).

In the episode, Captain Kirk famously used the rifle to cause a rockslide that buried Lt. Commander Gary Mitchell (portrayed by Gary Lockwood) after Mitchell developed unparalleled psionic abilities and went mad with power.

Along with this rare prop were many more classic Hollywood items up for auction including Christopher Reeve’s Superman costume from Superman IV. But the phaser rifle, quickly phased out itself for the more common phaser pistol, was the clear eye opener, selling for far above it’s expected auction value of $50,000.