In the 1920s and ’30s, clerks at The Times collected stamps from overseas mail. The postage tells of a fluid world history.

If you're interested in investing in postage stamps, a financial advisor can help you analyze investments and manage risk.

Available in panes of 20, the stamps — which never expire — will always retain a value equal to the current First-Class Mail 1-ounce price. “Feeling incredibly proud and honored to have my ...