Windshield front or back?

Back in mid 80ties I had a couple 62 356 Porsche’s.
I sold most of the extra parts back then and moved
away. Came back a few years ago and found a
window in my dad’s attic while selling his house
after he passed. I’d like to sell but can’t tell if it’s a
front or back windshield. dimensions are approx
34.25” x 15.5”