This composite Vigraha, made up of 6 parts, shows Shiva and Uma riding a Rishabha, Shiva’s vahana. The deities are framed by a prabhavali. Shiva is holding Ankusha and Mirga in his rear hands.

Siva and Uma, on their own, would have been referred to as Umashaita. If their son, Skanda, is standing between them, then they are Somaskanda. Here, riding  Shiva’s vahana, they are referred to as Rishabeshwara.

The vigraha depicts a processional scene, as the vigraha includes the vahana. The Vahanas tend to be made of different materials, usually lighter materials, than those of Utsavmurtis.

This is probably a pilgrim piece and meant for home worship.

This vigraha is, most likely, from Tamil Nadu or from the bordering regions.  There is not much ritual-related wear. This may not date earlier than the nineteenth century. The Vigraha is about 13 cm in height.

Below is a Rishbeshwarar mural from Thanjavur Brihadeeswara temple.

10 Feb 2020: TVMalai Raja pointed out that this Vigraha is better known as Rishabaruda Moorthy. The distinction is that Moorthy is used when Siva is with his consort Parvati, and Eshwara when he is on his own.