Oldenburg

Oldenburg was a duchy in the northwestern German Empire.

Stamps issued before 1864 have been forged. !864-67 issues are known with forged cancels. See: the Stamp Forgeries site with an excerpt from The Spud Papers.

 File:Oldenburg tenth th first.jpg|1852 1/10 thaler value File:Oldenburg 1g black on blue.A.webp|1859 1 groschen value File:Oldenburg 1861 3gr.jpg|1861 3gr value File:Oldenburg third sgr embossed.jpg|1867 ⅓gr value 
 * In 1852, four values were issued, the designs showing a full coat of arms over the values of a fraction of silbergroschen or thalers.
 * In 1859, four values were issued with a crowned coat of arms designs in black on colored papers.
 * In 1861, six values were issued with a crowned coat of arms design in different single colors.
 * In 1862, embossed designs in an oval were issued, rouletted 11¾.
 * In 1867, previous designs were issued rouletted 10. Mint examples aren't hard to to find but genuinely used one are, so forged cancels exist.
 * In January 1868, Oldenburg joined the North German Confederation with Oldenburg's stamps becoming obsolete.