[quote=@OneEyedChurro]
<Snipped quote by Ashgan>

Aw. I'm really bad with numbers-

It'd pretty much be between a one-handed longsword and a two-handed blade, as if the smith couldn't decide if he wanted the wielder to use one or two hands and just stopped somewhere halfway between the two. It's also fairly thin looking but solid and heavy. Someone stronger than the Prince could probably easily use it with one hand, or switch to two to get harder swings- Prince usually uses one since he's got the lantern in the other. All in all it was my way of sort of alluding that the Prince is fairly weak and not a great fighter. 
[/quote]

Based on that description, I'd estimate the sword has about a length between 100 and 140 centimeters (39-55 inches), 20 reserved for the hilt to fit two hands at minimum, and a weight between 2 and 3 kilograms. Number veering towards the high extreme would make one handed use even for strong people rather impractical though. An alternative to save a bit of length and weight, the grip could be made strictly for one-handed use, and add a leather ricasso so you can safely put your second hand on the blade itself to two hand it.

Not that I'm obsessed with numbers, but with weapons I always like to make up their measurements to better imagine what wielding them would be like. Maybe it helps you too - I've held measuring bands and pretended they're swords for a while now ^^