2 adjectives to describe appraiser

A difference in value of the same articles to some extent will necessarily exist at different ports, but that is altogether insignificant when compared with the conflicts in valuation which are likely to arise from the differences of opinion among the numerous appraisers of merchandise.

This demands great mercantile skill, knowledge, and experience, and therefore, for the want of skillful appraisers (a class of officers wholly unknown in Mexico), could not at once be put into successful operation there.

2 adjectives to describe  appraiser