NumiAgent blog

Practical guides for photographing, cataloging, researching, and collecting coins and banknotes.

Photography

How to photograph coins and banknotes for your catalog

Capture both sides, keep inscriptions readable, and process a batch without losing track of which images belong together.

Cataloging

Choose the fields worth recording first, keep guesses separate from evidence, and build a catalog you can search and export.

Valuation

Find sales that match your coin and compare the same price basis, with the date, original currency, and lot link attached.

Collecting goals

Set a scope for your Roman collection, define what counts as a match, and keep a source-backed record of the rulers you still need.