I came across this one yesterday. 8 x 2 inches. It had a thick layer of grease/oil on the top. The wood for the box is very light like Basswood. I cleaned it and lapped it. It is still low on the ends where the darker spots are. It is very fine. Click image for larger version.  Name: hone.JPG  Views: 238  Size: 51.6 KB  ID: 93471Click image for larger version.  Name: hone1.jpg  Views: 238  Size: 57.1 KB  ID: 93472Click image for larger version.  Name: hone2.jpg  Views: 235  Size: 54.8 KB  ID: 93473