I've just rewatched Moebius, and made a realisation at the end of the episode regarding the puddle-jumper they use (the one discovered in It's Good to be King:
The alternate SG-1 (along with the original Daniel) manage to stop Ra from taking the Egyptian stargate so it can be found again in our timeline. They also ensure that there is a tape explaining what happened and also put the ZPM where it can be found. So, doesn't this also mean that the puddle-jumper which they used could also be in the desert somewhere (in fact, that is how the alternate team actually get it because the original team left it there in the first place).
But, I don't remember the puddle-jumper being shown or even mentioned in the rest of the series - GateWorld hints the jumper is right where it started - but that doesn't seem to make sense.