Bricks With Flowrib – Scratched-C

Numbers: 11, 12, 13, 14, 15, 16, 18, 20 and 21.

Numbers 12, 14 15, 18, 20 and 21 are written twice, and so is the C in 15, 18 and 20.

14 and 20 have also a scratched “PAT”. 20 also “PEND”

Not shown in the photo: All have numbers below the flowrib, starting with “1” (the second number is mainly covered). 20 has 20. Pip on the short side.

[Original post and comments on Flickr.]