I was reading about Hudspeth County, Texas. It is the county just east to El Paso and bordered on the north by New Mexico and on the south by Mexico. One of the photos there had caboose 1776 at a museum. Unusual number. I wonder if it is the original centennial caboose? This photo is embedded and all credits go to Jason Penney, the author of the article as well as the photographer. Here is a link to Jason Penney's website. Also Jason Penney Photography.