Between both pieces (which were both great pieces), I would opine that the 5513 was more collectible and its value would likely appreciate further faster over time. It's such a classic. But then again, it's going to relatively easier to flip the 5513 compared to the 16613, so if you place both pieces up for sale at the same time, you might just end up with the 16613 in your collection still after the 5513 goes. Either way, you can't really go wrong with either pieces in your collection, mate.