For an ensemble that's super easy but can be modified in a variety of different ways, pair a charcoal blazer with navy jeans. To introduce a little depth to your getup, complement your ensemble with black leather derby shoes. This is a combo you, as a 60-year-old gentleman, can always rely on.
This combination of a charcoal blazer and navy jeans strikes the ideal balance between dressy and relaxed. Brown leather chelsea boots are a simple way to bring a sense of refinement to your outfit. An ensemble like this will make any over-60 gentleman look better than any of his peers.