New postmaster Megan Brennan sworn in, Circus sheet error discovered: Week's Most Read

It’s time to catch up on the week that was in stamp-collecting insights and news.

Linn's Stamp News is looking back at its five most-read stories of the week, according to reader metrics. 

Click the links to read the stories. Here they are, in reverse order:

5. Japan reveals its joint issue with the United States: Japan Post is showing preliminary artwork for its half of the upcoming joint issue on its website.

4. U.S. Stamp Notes: Tips for expertizing the Kansas-Nebraska overprints of 1929: Is it possible that the Kansas-Nebraska overprints in your collection have been faked?

3. Siegel offering back-of-the-book: March 25 auction will feature newspaper stamps, postage dues, special delivery stamps, United States possessions and more from the Daniel B. Curtis collection.

2. Mystic Stamp Co. discovers Circus souvenir sheet with missing gold error: The most controversial United States stamp issue of 2014 has been discovered sporting a dramatic error.

1. New postmaster sworn in: Megan J. Brennan was ceremonially sworn in as the nation's 74th postmaster general March 6 in a low-key event.

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Editor's note: Metrics were measured between Friday, March 6, and 9:52 a.m. ET Friday, March 13.