I have some others that aren’t quite 90x90, maybe more like 90x89 or 88 even. These were worn often by my mother as far as I recall, so perhaps over time they shrunk while washing maybe?
This is another one with a slightly different sizing of 90x88. Normal for a vintage scarf or definitly a fake?
For vintage Hermès scarves, it’s quite common for them not to measure a perfect 90×90 cm. Slight variations like 90×88 or 89×90 can happen due to hand-rolled edges, wear, and even shrinkage over time from washing or steaming. From what I can see, these look authentic to me.
Appreciate you sharing your knowledge Baptiste 