Sunset Sarsaparilla Star Bottle Cap

 is a miscellaneous item in Fallout: New Vegas.

Characteristics
The Sunset Sarsaparilla Star Bottle Caps are found throughout the Mojave Wasteland and are a collectible item. Some time after the Courier finds a special cap (one can be found in a house in Goodsprings, a man named Malcolm Holmes, a retired cap collector (though he has six star caps), will approach the player and warn that the caps are highly sought after by collectors who will kill for them. The caps are thought be very valuable, because according the legend they allow access to a secret treasure guarded by a man, since before the war. They are apparently still occasionally found by opening new bottles of Sunset Sarsaparilla, as the man guarding the treasure distributes them randomly.

Locations

 * There is one bottle cap located in Goodsprings in a building (labeled "Goodsprings Home") a few yards just southwest of a rotating (it's actually right next to the non-rotating windmill) windmill on one of the counters inside. (Possibly in the kitchen.)
 * At the bottom of Devil's Gullet in the bottom of a crate, there is a star cap between two empty bottles.
 * A single star cap can be found in Jean Sky Diving. It's on the desk in the middle of the room.
 * There are two on a mattress at the Emergency Service Railyard.
 * There is a star cap on the reception desk of the NCR Correctional Facility Visitor's Center.
 * There is one star cap to be found at each of the following locations: Bradley's Shack, Lone Wolf Radio, the Sunset Drive-in (on the floor of the ruined building), El Dorado Gas & Servive (On the counter inside), and Bison Steve's in Primm (1st floor on an end table).
 * Another is found in the "Nipton Road General Store" at Nipton Road Reststop. Upon entering one should head to the back left corner and on the same table as the cash register there ill be several regular bottle caps as well as a Sunset Sarsaparilla Star Bottle Cap.
 * In Nipton itself, there is a star cap in the house south of the general store, where the "lottery winner" is found.
 * One can also be obtained in the Nevada Highway Patrol Station. In the cell on the floor, next to the dead prisoner.
 * 9 can be found between Nipton and the Nipton Road Pit Shop. In between the two Tomas and Jacklyn are in a gunfight. If Tomas dies, you can talk to Jacklyn and confront her about the Sarsaparilla Star Bottle Caps, she will attack you. Kill her and loot her for 2 Star Bottle caps, then loot Tomas for 7 more. This is also possible if Tomas kills Jacklyn, you can loot Jacklyn and then pickpocket, talk to or kill Tomas for his 7 caps.  Total outcome is 9 star caps either way.  It is also possible that Tomas will have looted Jacklyn's 2 caps off her and have them in his possesion if he runs up to you (like a taller version of Bryan Wilks) and starts ranting about some woman who is nowhere in sight. It is also possible for Jacklyn to kill Tomas, loot his caps and approach you, ranting about a man shooting at her. She will then open fire on you, and after killing her you can loot her body for 9 caps.
 * One can be found on the first floor of the REPCONN Headquarters (West of the 188 Trading Post) on the counter on the among a number of regular caps in what appears to be a gift shop next to the display of radio active waste barrels.