The concept of the locking of front doors on Type 2 buses has been altered in the course of production. The locking on Type 2 08/72-07/79 was done from the inside by manipulating a door stop, located near the lock. On type 2 08/68-07/72 the inner door handle was a part from this locking function. This latter function caused that the inner door handle was a rather complex unit susceptible to accelerated corrosion. Furthermore the used material was also quite expensive. The manufacturing process was simplified and got cheaper by using a different material and concept. The accelerated corrosion makes that owners of such early Type 2 buses are confronted with inner door handles that have to replaced urgently. From now on BBT has this nice reproduction of quality each for each side available from stock.