Variation 2: yellow pmw, with shared box
The Mobile Excavator was a combination of previous models to create a toy with good play value but which as a real vehicle would probably not have been viable!
The casting of the cab and chassis were indentical to the AEC Sunderland truck which Benbros had used for several former models but a small strengthening panel was added above the rear axle presumably to cope with the weight of the excavator body. It was painted red and the metal wheels were either a matching red, or yellow or dark-blue. The black tyres were lightly treaded. Under the chassis 'Benbros Qualitoy' and 'Made in England' were cast.
Like the Mobile Crane, the red & yellow Excavator body was centrally fixed to a platform on the chassis held in place by a tab behind the cab and a rivet at the rear. Benbros used the second type Excavator with unpainted metal handles and a pin securing the arm and bucket to the body. '10-RB' decals were added to both sides and 'Ruston Bucyrus' was cast at the back.
As with the earlier Excavator, the lifting arms and bucket were painted green and were operated from unpainted metal handles in the body using strings attached to the jib and bucket. The handles were usually positioned on each side but models exist with both on one side.
The Mobile Excavator shared a yellow & red box with the Mobile Crane with illustrations on opposite sides and model name in a large panel. On one end-flap a blank panel was left for the model details to be added, in this case 'M Excavator'.
The Mobile Excavator is a scarce model even in playworn condition, and mint boxed examples are hard to find and carry a premium value.
Variation 2: yellow painted metal wheels
Qualitoys Mobile Excavator
All had red & yellow boxes shared with Mobile Crane
1) RED cab/chassis/base RED pmw YELLOW platform RED/YELLOW body GREEN jib um handles & hook
2) RED cab/chassis/base YELLOW pmw YELLOW platform RED/YELLOW body GREEN jib um handles & hook
3) RED cab/chassis/base BLUE pmw YELLOW platform RED/YELLOW body GREEN jib um handles & hook