This is a replacement fuel tank for an N Scale ‘Con-Cor’ Alco PA. It fits the powered PA1s. 2nd and 3rd generation 'Kato' plus 1st generation 'Chinese-made', I don’t know about the latest version.
I have only printed this in FUD & FXD materials.
For more information please see my blog - www.jamestrainparts.wordpress.com