Got a Mole but it's a huge model, pretty sure it isn't Matchbox since the carrier vehicle is all plastic (oddly the mole itself is largely metal) and it's much bigger than the Thunderbird 2 model! Quite a clever design in some ways - the caterpillar tracks are geared to a mechanism that spins the drill as it moves along the ground, the carrier cradle tilts to launch it, and it does actually slide out of the vehicle quite smoothly.
It's a four-coloured ball-point pen about 30cm long and 3.5cm wide, and possibly the most cumbersome pen I've ever seen. Each of the fins pushes out one of the colours, which is why they are coloured differently, pushing the rocket exhaust nozzle makes all the pens retract. It's a bit wobbly standing on the fins. Got it for a pound and was very pleased!