Built by AT&SF in 1951. These cars were originally full cupola-style with four windows on each side. In 1970 AT&SF sold Penn Central seven cabooses that became the N-5K class. After Penn Central bought them, the cupola was cut down; leaving a stubby bump in the roofline. The stove vent was moved to the stub of the cupola. Several windows were plated over and a new bay window added.

They were assigned to transfer service.

All went to Conrail with their PC numbers. Two exist today.

PC 18443 was originally ATSF 1564
PC 18444 was originally ATSF 1626
PC 18445 was originally ATSF 1704
PC 18446 was originally ATSF 1717
PC 18447 was originally ATSF 1720
PC 18448 was originally ATSF 2258 had a peaked roof
PC 18449 was originally ATSF 2263 had a peaked roof

	N-5K	Location	Date	Photo Credit
	18445	Dickerson Yard Charleton WV now a Conrail caboose	April 1981	Jim Hebner
	18445	Preserved at Lewisburg PA	1997	George Rovenolt
	18446	Has been preserved! Visit it and other preserved cabooses at this website	1996	Walt Gosciminski
	18449	Springfield OH Greenmont Yard	1974 or 75	Jim Hebner
	18449	Springfield OH	1974 or 75	Jim Hebner
	18449	Springfield OH Greenmont Yard	January 27, 1974	from the collection of Jim Hebner
	18449 large	probably Springfield OH Greenmont Yard	April 1976	Jim Roberts
	18449 large	probably Springfield OH Greenmont Yard	April 1976	Jim Roberts
	18449 large	probably Springfield OH Greenmont Yard	April 1976	Jim Roberts
	18449 large	probably Springfield OH Greenmont Yard window detail - not your standard Bay Window	April 1976	Jim Roberts
	18449	Springfield OH Greenmont Yard	June 1976	Jim Hebner
	18449	Springfield OH Greenmont Yard	June 1976	Jim Hebner