Diesel locomotive T 669.0107 of the Czechoslovakian State Railways.

■ Variant in original design available for the first time
■ Free-standing grab rails, some made of metal
■ Ideal for use in front of goods trains
■ In digital operation with shunting light and separately switchable headlights/taillights and driver's cab illumination

The T 669 diesel locomotive, later known as the 770 series, earned its nickname from the Russian class designation ЧМЭ3 ('Tschme3'), which is phonetically very close to the Czech word for bumblebee 'Čmelák'. Even when starting, its humming sound is similar to that of a bumblebee - at least from a distance. With 1.400 hp, it proved highly effective in both light and heavy shunting operations.