🗝️ Old Key Emoji

An old-fashioned key, as opens an antique chest or wardrobe. Generally depicted at a 45° angle as a tarnished, silver
with an ornate, bowed head and two-toothed
at the bottom left.

Like
, often used figuratively, e.g., the key to success, being key ("crucial"). May also be applied to antiques.

Microsoft’s design is gold, with the head at the upper left.
and
keys were previously gold.