Searching for tsuba motif: Guruma wheel, with Arrow fletching spokes, and Raised mimi

[GRC]

Well, as I just posted my de-rusting of one of these, I thought I would post them both, and ask if anyone has seen this type of tsuba motif before (preferably with images).

...and specifically with the raised Katchushi-style mimi.

To me, it looks like a deliberate attempt to be a Guruma wheel, with the back ends of a bunch of arrows arranged as "wheel spokes". 

I believe the combined arrow-wheel motif is called "Yaguruma".

 

In hand, they seem to have quite a bit of age to them and I really like their simple, rustic look.

I have reached the end of what I can search and haven't found any other Katchushi-style versions.

 

As a motif comparison, there's these ones from Mito and Akasaka.

But, they have too many or too few arrows to look like "wheel spokes", and they don't have the raised mimi, so I don't see the "wheel" aspect of the motif:

[Bugyotsuji]

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