Identification of Symbol / Kamon on Saya and Menuki

[Klink]

Hello all and thanks in advance for any thoughts on this Symbol.  I believe it to be a Kamon because it is on two sides of the Saya and one of the Menuki on the Tsuka.  I went through the 5000 Kamon book twice and did not find anything that resembled it.  I tried Google Lens and also thought it might be a Shinto symbol but no luck there either.  Maybe I need a 10000 Kamon book or better reading glasses.  

[Klink]

It intrigues me to think how the Symbol was made on the Saya.  It appears to be something that was done over the lacquer finish.  It has a raised abrasive feel when you touch it and I can see spots of what looks like copper underneath the silver or tarnish finish.  So did they have a process of taking a thin copper foil and doing a silver plating to a intricate design and setting that in the lacquer?  The Habaki has a silver finish over copper and the Menuki looks like a solid piece of silver or nicely plated metal.  

[eternal_newbie]

I believe it might be a composite pattern made of the same kamon/motif repeated five times - the three overlapping diamonds, with the tips of the largest diamond touching those of the adjacent instance.

[Bugyotsuji]

松皮菱 x 5 

As Rohan says, it’s the Matsukawa-bishi or Pinebark diamond in a linked circle of five. It must be a relative of perhaps the famous Ogasawara family.(?)

 

Try key words in Japanese (like Kamon, itsutsu Matsukawa bishi)

家紋　五つ　松皮菱

 

Linked, in a circle, etc.

 

Probably a later creation to show distant ancestry, and a 10,000 Mon book sounds about right!

[Spartancrest]

五つ矢 (Itsutsu-ya / 五つ矢紋) — literally “five arrows.” Japanese kamon references describe 五つ矢 as five arrow elements arranged in a five-way radial pattern.

Variants involving 矢尻 (yajiri, arrowheads) and 五つ矢, including a form described as 斑入り矢尻付き五つ矢 (“five arrows with arrowheads”).

Information gathered from AI - AFTER AN ARGUMENT WHERE AI INSISTED THERE WERE SIX ARROW HEADS!  Apparently AI can't yet count!

[Klink]

I was so focused on the inside five points that I missed the outside five individual Matsukawa-bishi symbols.  So if you take these five symbols as the basis of the Mon then isn't the inside five pointed arrows just something created by the main design?  For example I found the single symbol and a three symbol Kamon.  In the case of the three symbol aren't the three arrows created just a random occurrence?  If this is the case then as stated by Piers it is perhaps a descendant of the Ogasawara family.  So where do you find that 10,000 Kamon book . LOL

 

Thanks for the comments as I would have never seen the forest through the trees. 

[Klink]

Dale it's a weird thing with AI, apparently it has a hard time as well with five fingers on a hand.... it likes to make 6 fingers!!