Probably for nko'th; spicery, i.e. (generally) valuables -- precious things.
see HEBREW nko'th
H5238. nekoth
[נְכֹת] noun [feminine] treasure (so context demands) (ᵐ5L 2 Kings 20:13 τῆς ὑπάρξεως, compare ᵑ7 ᵑ6; derivation uncertain; DlProl. 141 compare Assyrian bit nakamti (nakanti), house of treasure, √ nakâmu, heap up [DlHWB 462], whence ׳ב ׳נ perhaps borrowed; this favoured by NöZMG xl (1886), 731 HptZA ii. 256 (reading nakavâti = nakamâti, and Hebrew ׳ב נִכְוֺתָיו or ׳ב נְכוֺתָו)). — Only suffix נְכֹתֹה בֵּית = his treasure-house 20:13 = Isaiah 39:2.