I see what you mean about the ballista Georginetto, it's not quite there as regards looks, but it's a nice addition to the siege engine lineup, and I'd like to grab a few more of this set if I can locate them.
The lion shield in this set also appeared in the 5863 super set I reviewed recently, plus a matching flag, and they also appeared in the 3667 small castle I cquired this week, though that set is 16 years old. It's nice to see some of the older moulds and designs still getting used.