Conrail 21165 is an N7E caboose built in October 1969 by the International Car Company. It is owned by the Conrail Historical Society. The following is from their roster page:

CR 21165 Topton, PA

The #21165 began life as Erie Lackawanna Railroad #C368, part of a group of 20 cabooses built by the International Car Company in 1969. Conveyed to Conrail in 1976, it was painted blue in 1976 and served Conrail until 1984 when it was sidelined in Reading, PA. Eventually sold into private ownership, the #21165 was moved to Sands Point, NY and put on private property. In 2006, the property owner decided to list the caboose on eBay. 

After several months with no bids, the owner donated the caboose to The CRHS. It was trucked from Sands Point to Middletown, PA, where it was placed back on live rail at the Middletown & Hummelstown Railroad.

In 2014, the #21165 was moved to the Allentown & Auburn Railroad in Kutztown, PA, where it underwent an exterior cosmetic restoration and has been the recipient of a fresh paint job, making the car look as good as it did when it first rolled out of Conrail’s Reading, PA shops in 1976.

Starting in August of 2017, the #21165 has been on lease to the Allentown & Auburn Railroad, where it is frequently used for both excursion trains (which are available for the public to ride) or on freight trains, doing exactly what it was designed to do five decades ago!