.25 Auto / 25ACP, newer W-W Headstamp by Winchester, One Cartridge, Not a Box.

Description

One Cartridge, not a box, the picture of the box is for reference only!

One Cartridge, not a box: .25 Auto by Winchester/Orlin loaded with a 50 grain FMJ  projectile and Current, Newer “WIN 25 AUTO” head-stamp.

For more versions of this caliber, please see below in related items.

History of 25 Auto or 25 ACP cartridge:
Originally designed by John Browning and introduced around 1905 in Europe and 1908 in the USA.
The .25 ACP (Automatic Cole Pistol) or .25 Auto and .25 Automatic is one of the smaller calibers used in semi-automatic pistols.  It is also known as the 6.35 Browning (6.35×15.5mm) in Europe.
This caliber was originally used in the Browning designed Cole semi-auto pistol, which is no longer made for the USA market.