Himalya Toys Shell tanker: who knows the maker?

This tinplate Shell tanker carries a clockwork mechanism driving the rear axle and runs on plastic wheels. It measures 21 cm long, 8 cm wide and 8 cm high.

The rear is marked 'Himalya Toys', with what appears to be a goose above the name and the letters TH inside a circle below. The bumper carries the number 786. The number 1980 on the back of the tank may indicate the year of manufacture, but that is not certain.

The 'Burmah Shell' lettering refers to the Indian-based oil company nationalised in 1975. The toy's maker is less clear: Himalya Toys is thought to have been an Indian, or possibly Nepalese, manufacturer.

Do you recognise this trademark or know more about Himalya Toys? A catalogue, box label or another example could help.

Story and research by @Hans van Dissel.