Mystery trenching bucket - trying to determine brand

[Kubotas]

Hi guys,

I have a narrow mystery trenching bucket, and wondering if there is a database anywhere of what attachments fit what equipment .. based on bucket hole spacing ?
I tried searching, but my keywords didn't find anything. It's pretty old, so likely from a US made backhoe or excavator. I'll try to add pics soon
Thanks

 

[Fixastuff]

It’s 100% for a cat, bobcat or deere. Unless it’s not. lol.