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Spangle-cheeked Tanager

OP: Why couldn’t traditional Chinese Yinpiao银票/silver drafts be forged if they were merely slips of paper? (cr大明宝钞，渐越)

Traditional Chinese yinpiao/silver drafts were paper vouchers issued by private banks starting from the Song Dynasty(960–1279). People could exchange these slips for physical silver at bank branches across the country.

Silver drafts were made in multiple copies with matching serrated seal edges. One copy went to the customer and others stayed at the bank. All edges had to fit perfectly together to withdraw silver. The unique split edge marks were almost impossible to copy.

This mechanism is known as qifeng骑缝 (split-joint seal) in China. It first originated in the Western Zhou Dynasty (1046–771 BC). The Rites of Zhou records that contracts were written on bamboo or wooden slips in duplicate. Notches and marks were carved in the middle before splitting the slips, with each party keeping one half. The two halves would be matched by their notches for verification.

During the Spring and Autumn and Warring States periods (770–221 BC), this idea evolved into hufu虎符/tiger tally tokens. A military tally was split into two pieces with identical inscriptions carved along the split edge. Troops could only be deployed if the patterns and characters on both halves perfectly aligned, serving as a metal version of the split-joint anti-counterfeiting system.

The technology matured in the Tang Dynasty (618–907). Government documents and private contracts commonly used split-joint seals stamped across the dividing line. The Chinese character "hetong合同" (contract) was written across the middle before the paper was torn apart, so the complete characters would only appear when the two halves were put together. This split-coupon system was later adopted for Song Dynasty (960–1279) jiaozi paper money and yinpiao/silver drafts of the Ming and Qing dynasties (1368–1912).

Official Song dynasty paper money (Jiaozi交子) was abolished in 1107. Private silver drafts issued by Qing-era piaohao票行 (ancient exchange banks) vanished completely in 1951, hit hard by modern banks and currency reforms. Nowadays silver drafts no longer circulate as currency. Their collectible value depends on their rarity and physical condition.

First they were called "chirographs", but later the word "indenture" (in its earliest meaning as just a legal document of any kind between two people) came to be used, originating from the practice of a contract being written twice on a single piece of parchment and then cut in half with serrated edges (as in dent, "teeth" -> indents -> indenture) in order for each party to take one half, so they could later piece them together and verify that there had been no forgery -- same as the Chinese silver drafts!

(Charter of the Clerecía de Ledesma, 1252, showing the serrated indents at the top -- presumably they are cutting rather than tearing because they're using parchment, which I expect is much harder to tear than wood-pulp paper like the Chinese were using)

Brian Haberlin (American, born 1963)

Pygmalion, 2025

Watercolor on paper

21 × 14 in (53.3 × 35.6 cm)

"The hat is customizable," he said, struggling with the velcro patch on the front. "If I need it, I have an ICE one too. I pick based off the business i walk into."

"Customizable is an important hat descriptor," I said. "what can I get you?"

"You wouldn't believe how offended people get these days," he said. "And I'm supposed to do something about it if you're offended? You chose to be offended!"

"We all have hundreds of thousands of decisions everyday," I said. I thickened my accent. "That's what my stepdad always said. But I can make one easier - we have a delicious Ethiopian roast available."

"Like if I told you you have a bull ring," he said, "because bulls have rings in their noses. Is that offensive?"

I laughed. "I've heard that before."

"It's a joke, but people get offended. Maybe you're offended."

I looked at him. I smiled. "You aren't trying to offend me though, right?"

Of course he was. I was being friendly and the friendlier I was, the faster he switched topics. He was saying anything inflammatory he could think of to see if I'd take the bait. After about 20 minutes of my redirecting and deescalating, he settled into a more normal interaction. He took up too much of my time showing me a product I'd feigned mild interest in to get him to stop talking about getting accused of inappropriate behavior at work. When we finally disengaged, he spent 10 minutes trying to catch my eye again. When he failed, he left.

There's this new breed of customer who insists on trying to incite political conversation through their clothing and, when that doesnt work, their snide little comments. If I owned my own business, maybe I would have given the guy the fight he wanted. But I work for a corporation and I love paying my bills so I deescalated.

Washington Post is paywalling the article but it looks like Taylor Farms — a consumer bagged salad brand that also supplies produce to grocers and fast food chains like Taco Bell, Walmart, McDonald's, Chipotle, Burger King, KFC, and Meijer —may be at least one of the sources of the current cyclosporiasis outbreak.

Made this post about 15 minutes after the repair guy who fixed the pump on my dishwasher packed up his tools and left, as the dishwasher was whirring along doing my dishes from that morning.

Married the love of my life at 50.

Got my Class A CDL at 59.

You've got time.