The Harry Lelande Auction Catalog
Dave Hirt writes:

To read the catalog on NNP, see:
Public sale of rare coins, metals, paper money, etc., the Alonzo Paige Lansing collection ... of U.S. and foreign coins ... [09/20/1928](https://nnp.wustl.edu/library/auctionlots?AucCoId=511144&AuctionId=520399)

To read the earlier E-Sylum article, see:
HARRY JASON LELANDE (1871-1965)(https://www.coinbooks.org/v24/esylum_v24n13a14.html)

Tracing Libertas Americana Medals
Nathan Markowitz writes: What Constitutes a Die Variety?
Bill Eckberg writes: The 1797 Rogers-Pogue Half Dollar Provenance

Saul Teichman writes:

Saul adds:

To read the earlier E-Sylum article, see:
RECORD PRICE FOR 1797 HALF DOLLAR(https://www.coinbooks.org/v24/esylum_v24n13a21.html)

Impressive Optical Character Recognition

"The name of printer was too small, less than 2cm, about two grains of rice long. The characters, less than 1.5 mm wide, were too small for my camera to be recognized. If I could only provide a larger image. Now, that thought turned out to be a step in the right direction.

"The Google Translate software tried to recognize the words that were captured by the camera. It was necessary to find the right distance between the camera and the computer screen by holding the phone closer to and further from the screen. Then the answer appeared on the phone : Dai Nippon Printing Co., Ltd. Got it !"

Martin writes:

To read the earlier E-Sylum article, see:
RESEARCH USING IMAGING AND GOOGLE TRANSLATE(https://www.coinbooks.org/v24/esylum_v24n13a18.html)

The Change in Change-Making
Chris Neuzil writes: The Worthy Coin Co. Bid Board
Jeff Rock writes:

To read the earlier E-Sylum article, see:
NOTES FROM E-SYLUM READERS: MARCH 14, 2021 : More on the Romano Worthy Hoard(https://www.coinbooks.org/v24/esylum_v24n11a12.html)

On the Columbia Farthings
Jeff Rock writes:

To read the earlier E-Sylum articles, see:
QUERY: COLUMBIA FARTHINGS(https://www.coinbooks.org/v24/esylum_v24n11a15.html)
MORE ON COLUMBIA FARTHINGS(https://www.coinbooks.org/v24/esylum_v24n12a12.html)

Query: Fonrobert Sale 1667 New York Coin
Dave Hirt writes: The Case of the Missing Queen
Kavan Ratnatunga writes:

See:
Plastic £5 banknote 'can be rubbed out', says printer(https://www.heraldscotland.com/news/14828549.plastic-5-banknote-can-be-rubbed-out-says-printer/#)
New 'Durable' £5 Note Can Be Wiped Clean With A Pencil Eraser(https://www.youtube.com/watch?v=zQBVrmcPjb0)
1998 - Sri Lanka - 200 rupee banknotePolymer Substrate(http://notes.lakdiva.org/commemorative/1998_ind50_200r_polymer.html)

To read the earlier E-Sylum article, see:
£10 NOTE MISSING QUEEN'S FACE(https://www.coinbooks.org/v24/esylum_v24n13a30.html)

Decimals Finally Get The Point!
David Pickup writes: