This is said to be a Delaware, Lackawanna & Western Railroad employee’s lapel button but of undetermined age. Note that the logo is the same and there is also a reference to ‘safety’.
View attachment 1891719
They had originally been the Liggetts Gap Railroad Company and then the Lackawanna & Western Railroad Company before changing name to the Delaware, Lackawanna & Western (DL&W) Railroad Company on 11th March 1853. They continued under that name until merging with a competitor to form the Erie Lackawanna Railroad Company on 17th October 1960.