I read thru several of the threads in this forum on printing techniques, I must say I am now more confused than before.
Maybe some of my collector colleagues have some time/ patience to explain my questions in some details.
Around 1885, Thailand issued agriculture revenue stamps. Printed maybe in France, in sheets of 100 (10X10) mono-color.
originally these stamps were printed with 2mm spacing between the printed areas of the stamps. The blue border line thin and straight.
Later these stamps appeared with 3mm spacing between the printed areas, also the blue border lines are thicker and not completely straight.
But in this later retouched(?) printing the various stamps on the sheet have different redrawn lines with different imperfect areas.
1. From the scans is it clear what printing technique was used for those stamps?
2. How did they transfer 100 similar images into 1 plate? Via master die?
3. To have a plate with spacing between stamps of 2 or 3 mm, complete new printing plates had to be made?
4. Why does the printing plates with 3mm spacing between the stamps have different looking frames for each stamp? Why not retouch the master die if needed so all stamps look the same?
Thanks so much, please ask questions if my story is not clear