The good news: You can buy a Sputnik satellite on e-bay

The bad news: there are more Sputniks in circulation now than ever were made.

An aside: Sputnik is on what I tend to think of as a "seam" in the historical record. I've read so many conflicting accounts of what, exactly, it did that I have determined in my own mind that 1) nobody really knows and 2) it probably just went, like, BEEP BEEP BEEP BEEP.