"What makes it more pleasing is that it's the first time Napier Boys have ever won it in the history of the school," he said.
"They have never won a senior [qualifying] premiership before."
The inaugural qualifying premiership was staged in 2002 although NBHS are the only side in the province to ever claim national honours when they claimed the bragging rights with former coach Paul Trass in 1992.
Under the twin Davies' tutelage, this time last year was the first time an NBHS side had won a zone 3 premiership at junior and senior levels.
Davies' sons, Tyrese, a centre, and Isaiah, a power forward, are co-captains in a team who have faith in doing well to make their way out of their pool for a top-eight position at the nationals.
On Saturday, NBHS averaged 93 points a game in offence but were equally adroit in keeping a leash on opposition in bleeding 62 points a match on defence.
"We were the best defensive team there so we were the best offensive team as well but, as they say, championships are won on defence," said Damion Davies.
Tyrese scored 25 points while Kobe Kara (13 points), Yu Qing Jiang (11) and Clifton Bush jr (10) added to the collective cause in the final.
The Curtis Wooten-coached Hastings Boys' High School secured the sixth position to the nationals on Saturday.