Ralph Lauren Polo Uni. men's jacket dating?

[Brian Boru]

As I understand it 'Polo University' is a high-street lower level RL brand.

Does the L-1998 indicate it was made in 1998?

Light weight soft-tweed style jacket. Looks compatible with late 90s stylistically to my inexpert eye.

 

[The Vintage Vendeuse]

I agree with your 1990s assessment. I believe Polo University was 1980s/90s department store preppy/collegiate stuff.