Color Palette:

Use various shades of grey to represent the "grey" aspect.
Incorporate subtle, muted tones to evoke a sense of age and vintage.
Font:

Opt for a classic and elegant font that conveys a sense of history and sophistication.
Icon/Element:

Integrate an iconic element like an old-fashioned key, an antique hourglass, or a vintage book to symbolize the concept of age.
Consider incorporating a tree or branch to represent growth and the passage of time.
Arrangement:

Arrange the elements in a balanced and symmetrical manner for a classic and enduring look.