What are these irons?

[rondoroyal]

They're supposedly JDM. Shape looks like Taylormade RACs, but there are no markings whatsoever except "forged" and "v-cnc design" at the back. Anyone have any idea what they are? Thanks a bunch!

[darkhelmet]

Look like RAC LT's.  RAC MB's didn't have that much of a cavity.

 

But they're so rough, it looks more like a prototype than a finished commercial product of any kind.

[rondoroyal]

They do look like RAC LT's. The pattern on the back looks like RAC OS. It's pretty cool if they're prototypes, any chance they're made by Miura?

[fred faldo]

they sort of resemble the Concept irons that Lydia Ko has in the bag

[rondoroyal]

The only other thing I could find was these irons with the same markings from a Japanese marketplace