Potter's Test Piece Fragment ... AMS Horizontal (normal)
Potter's test piece fragment ... Jeff Vanderpool ... Well L 11:1. Horizontal (normal) ... 20 Apr 2021
Potters' debris test pieces wasters ... Anne Hooton ... Drafting Film Drafting Ink
Potter's Test Piece ... ΩΔ-5 855, 856 P 32371 ΩΔ 483 P 32365 P 32372 P 32371 P 32372