This is a Dinky No 717, Boeing 737 Airliner. The only jet passenger aircraft Dinky produced in the 1970’s, and for some reason it was only ever produced in the livery of Lufthansa. It usually came in a picture card box, this is the slightly rarer blister pack version. As a working feature the undercarriage could be operated from a thumb lever near the tail.
The model was produced between 1970 and 1975.