This is a really vibrant piece of collectable West German pottery by Waechtersbach. It is a ceramic tea light warmer (also known as a Stövchen).

It has a back stamp number 8879. See the details, below. While some of these (8879 items) were made in the 1930s, they continued to be made for several decades: this example was probably made in the 1960s, based on the design language.

It is in excellent condition - see only one small chip on the interior near the bottom of the petal-shaped 'lantern' openwork, which allows light from the candle to pass through it. 

Further details:

Waechtersbach 8879: refers to a specific model of ceramic tea light warmer (also known as a Stövchen) produced by the renowned German ceramics manufacturer, Waechtersbach. 
Product Specifications: Item Type: Tea light warmer or candle warmer.
Dimensions: Approximately 15.5 cm (6 inches) in diameter and 8.25 cm (3.25 inches) tall.
Material: Durable earthenware/ceramic.
Design Styles: Art Deco: Often found in vintage cream and orange color combinations.
Vintage/30s: Some models are identified as 1930s-era designs. It can also be found in solid vibrant colors like the signature Waechtersbach Red or orange. 
Collectibility: Pieces marked with "8879" and "Made in West Germany" are considered vintage collectibles, as the company ceased its German production operations in 2011.