Just placed these three Lufthansa 727s together while dusting my collection.
The large one is a "Raise-Up" travel-agency model in 1/50 (90cm long, 68 cm wing-span), to the right you can see a "Verkuyl"-727 in 1/100 and the smallest model is Herpa's 727-100 D-ABID in 1/200.
Sorry for the bad picture-quality.
When I noticed that all the models were back on the shelf again...
Kind regards!
Michael