This item was on the 12-2016 LoAR

12: Hosokawa Gentarou Masahiro - New Device
OSCAR finds the name on the Middle LoI of January 23, 2016 as submitted.
Vert, a roundel with an annulet of eight roundels Or
Documented as as IAP: See attchement
Konrad Mailander (Dragon) In Commentary:
Here are the three images referenced in the IAP documentation.
Device for Hosokawa Genarou Masahiro Individually Attested Pattern for Sword and Dagger
Gules a roundel within an annulet of eight roundels argent. (Matsudaira) O-uma-jirushi (Kiho Vol 2 Page 8) (NDL Scroll 2 Frame 11 http://dl.ndl.go.jp/info:ndljp/pid/1288242) See image 1
Argent a roundel within an annulet of eight roundels sable. (Hosokawa) O-uma-jirushi (Kiho Vol 4 Page 18) (NDL Scroll 4 Frame 21 http://dl.ndl.go.jp/info:ndljp/pid/1288217) See image 2
Gules a roundel within an annulet of eight roundels arge . (Toda) O-uma-jirushi (Kiho Vol 4 Page 22) (NDL Scroll 4 Frame 25 http://dl.ndl.go.jp/info:ndljp/pid/1288217) See image 3
The above submission has images. To view them, see the URLs below:
#1 
#2 
#3 