Fake Silmic II on eBay - high chance. They are one of the more counterfeited caps in China.
There are only metal can and SOIC version of HA-5002 currently in production. DIP version must be old stock, or even worst, used part taken from old equipment. Regardless, you can only use SOIC version of HA-5002 as you need to use the BrownDog adapter. HA-5002 doesn't have a normal pin configuration like your typical buffer. If you plug a DIP version of HA-5002 directly into the buffer socket of E12DIY, something will burn.