I think this may be new as I dont ever  remember seeing my dad wear it ,it does not come with a hat box.I think it must be from the 70s -90s see email from Lock & co they couldn't help me with dating.

This vintage Lock & Co Hatters 4041 Fedora hat is the epitome of luxury and style. Made in the United Kingdom, this navy-coloured hat is perfect for men who want to add a touch of sophistication to their wardrobe. Its size of 7 1/4 makes it a perfect fit for most head sizes.

The hat is in great condition and exudes a vintage charm that is hard to find these days. It is suitable for a variety of occasions and can be paired with a wide range of outfits. Whether you're dressing up for a formal event or just want to add some flair to your casual look, this Lock & Co Hatters Fedora hat is the perfect choice.