Minor correction. Jim, I assume you're thinking of Dell's Four Color issues though there were seven of those: 567 (adaptation of the movie), 650, 699, 719, 788, 849, 900. All by Fujitani
In addition to the Dell Four Color issues Marvel published a four issue mini series of Prince Valiant in the mid 90s (by John Ridgeway if memory serves) that was new material.
Of course there were many other comic-book appearances from all kinds of publishers, but they were all reprints as far as I recall.