Antique miniature picture frame shaped like a lady's boot in brass

Small antique picture frame in the shape of an old-fashioned lady's boot with a heel, pointed toe and engraved buttons.

Likely brass. With an oval picture opening and a fold-out stand on the back.

Date: Presumably the first half of the 20th century.
Height: 11.5 cm
Width: 8.5 cm
Weight: 60 grams

Condition: Age-related patina and signs of wear.