Ratnadeep (1951)

Bengali-Hindi costume movie (the Tamil version was probably dubbed). The kingdom of Basuligram is in mourning on the 14th anniversary of the disappearance of Prince Bhuvan (after 14 years, a missing person may be pronounced dead). That night, at a nearby railway station, a dismissed station-master Gopal finds the corpse of a Sanyasi (ascetic) bearing a remarkable resemblance to himself. When he realises that this is the missing prince, he impersonates him. Amid joy and celebration in the palace, he meets the young queen whose innocence makes him realise the folly of his deception. The businessman Ghulam, who wanted to marry the queen himself, intends exposing the impostor. The Hindi version had several Geeta Dutt, Jutika Roy and Talat Mahmood numbers. Based apparently on the famous Bhowal-Sanyasi case in Bengal.