The term "storehouse" is generic, and also occurs later in accounts of life in Roman Palestine where the otzar was a tax-collector's grainhouse.
[1] The first mention of the "treasury of the LORD" occurs in Joshua 6:19 where all the silver and gold vessels are consecrated to a "storehouse" which travelled with the tabernacle.
In Nehemiah and Zechariah, this became the subject of contention when Eliashib, grandson of Joshua the high priest, leased the storehouse to Tobiah the Ammonite.
In the deutero-canonical 2 Maccabees 3:6, reference is made to "untold sums of money" held at the treasury in Jerusalem.
[3] Josephus says that Pontius Pilate used the korbanas to fund the construction of an aqueduct of about 400 stade, or 75 kilometers, and that this action incited the population to a riot.