Help Identify 50Mm External Wg

[ZzZleeper]

So this external wastegate came with my turbo and manifold, and i have no idea what brand it is! I was told its a SARD, but from all the research i've done, i dont know if a believe it. I've come up that its a 50mm, but there aren't any markings on it giving me any hints. I was hoping someone might have a better idea? I took it off and cleaned it up a bit, but still nothing!

Any help will be greatly appreciated!

[scotty nm35]

No idea on brand, but it is old. I wouldn't be using it as the diaphragm would likely be stuffed. Replace it with a compact Turbosmart gate and save yourself a load of pain.