There is a huge volume of counterfeit and fake POS build cables being sold on EBay being flogged as legit brand cables ... including Japanese listings and shipped from China
On a balance of probabilities, you may have bern exposed . Sample threads below. There are many fakes in eBay, especially from China.
https://douglasconnection.com/shop-by-brand/furutech-products/
Just a sampler of the tsunami of similar threads ..
https://forums.stevehoffman.tv/threads/are-these-cables-genuine-or-counterfeit.227258/
https://forum.audiogon.com/discussions/furukawa-power-cables
https://audiokarma.org/forums/index.php?threads/fake-cables-on-the-auction-site-heads-up.622296/
You can guess and hope all you want, but the only way you will know conclusively is to contact the manufacturer directly.
On a balance of probabilities, you may have bern exposed . Sample threads below. There are many fakes in eBay, especially from China.
https://douglasconnection.com/shop-by-brand/furutech-products/
“.... Caution*
Any eBay or Amazon sellers of Furutech products ARE NOT AUTHORIZED FURUTECH DEALERS! Rakuten resellers in Japan ARE NOT AUTHORIZED FURUTECH DEALERS! IF THE PRICE SEEMS TOO GOOD TO BE TRUE, IT IS NOT A GENUINE FURUTECH PRODUCT!
Caution*
There have been confirmed cases of counterfeit products (Furutech replicas) being sold on www.aliexpress.com. Furutech advises against purchasing any “Furutech” labeled product from that site...”
Just a sampler of the tsunami of similar threads ..
https://forums.stevehoffman.tv/threads/are-these-cables-genuine-or-counterfeit.227258/
https://forum.audiogon.com/discussions/furukawa-power-cables
https://audiokarma.org/forums/index.php?threads/fake-cables-on-the-auction-site-heads-up.622296/
You can guess and hope all you want, but the only way you will know conclusively is to contact the manufacturer directly.