This four-armed Narasimha is in Samabhanga, standing without any bend. Standing Kevala (on his own) Narasimha is quite rare. This website has another Kevala Narasimha as Yoga Narsimha.
Narasimha’s rear hands are holding Chakra (Discuss) and Shankha (Conch Shell), attributes of Vishnu. Keeping with the Soumya (peaceful) pose, his front hands are in Abhaya (protection) and Varada (boon bestowing) mudra.
Wearing a knee length lower garment, with side-tassels, Narasimha is standing on an inverted lotus pedestal (Padmapeetha), Interestingly the side tassels are longer than garment itself.
This Vigraha is about 10 cm in height and it is from Karnataka. The Vigraha is designed to fit into a slot of a pedestal. The Vigraha may be dated to the eighteenth century.
Stone sculptures, especially relief sculptures, can be seen in Badami caves and Hampi. Metal Viigrahas are rarer.
The book ‘Studies in Tuluva History and Culture’ by Dr Gururaja Bhatt has two examples of Utsav vigrahas that are in worship (Page 326). One in Narasimha temple, Murumuru and the second one in Anantesvara temple, Manjesvara. Both these vigrahas pre-date the fifteenth century.