Potter's test piece ... Jeff Vanderpool ... Well L 11:1. Horizontal (normal) ... 20 Apr 2021
Potter's Test Piece ... AMS Rotate 180
Potter's Test Piece ... AMS Horizontal (normal)
Potters' debris test pieces wasters ... Anne Hooton ... Drafting Film Drafting Ink
Potter's Test Piece ... ΩΔ-5 861, 862 P 32379 ΩΔ 483 P 32365 P 32380 P 32379 P 32380
Potter's Test Piece Fragment. Potter's Test Piece ... ΩΔ-5 863, 864 P 32381 ΩΔ 483 P 32365 ΩΔ 498 P 32380 P 32382 P 32383 P 32381 P 32382 P 32383