After finding out that 240 and late 280 wiper blades are NLA from Nissan I decided to go on a bit of an adventure checking out what's available on the aftermarket. At least something that might be period looking.
On top is a new Nissan factory 77/78 280 black pin drive type blade, B8891-N3500. Below that is an excellent substitute from NAPA, 60-018-8 for about $12.00 each. I like these because they look good and the pin drive is solidly mounted to the superstructure and not part of a universal mounting kit. At the bottom are a set of NLA Datsun refills B8891-45090. The last set Nissan had.
At the top of the second picture is a set of Datsun factory blades that I liberated from a 240 with only 9k miles. On the superstructure is printed "under license from TRICO". Below that is a set of NAPA /TRICO Classic blades (6-1833). Although they are sold by NAPA and TRICO for about the same money, $9.00 each, and are almost identical, they are manufactured in China. The mounting arm is part of a kit and made from gray plastic. The design of the metal superstructure is nothing like the factory blades but the color is pretty close. Below that is a set of ANCO Vintage Specialty Blades, ANC-20-18. I had a hell of a time locating a set as those dealers indicated on the ANCO site as being near me didn't have a clue. I finally ordered from Summit for more than $25.00 each. Upon opening the packaging I discovered that THEY ARE THE SAME MADE IN CHINA BLADE AS SOLD BY NAPA and TRICO! Only difference-the superstructure is more shiny. At the bottom are a set of NAPA/TRICO refills and yes, they do indeed fit original Datsun factory blades. However, the stiffening piece is black. The NAPA part # is 6-1844 and are/were about $7.00 for a set. Given the relationship between NAPA and TRICO I'm confident that they are the same TRICO 44-180 mentioned by siteunseen. Cheers