11.06.2019, 10:12
Either the colour has faded due to decades of exposure to daylight, this can happen very evenly when the tape is lying on a desk near a window facing north, so without direct sunlight, but still bright enough. Or the two j-cards are simply from two different batches, and they used slightly different colours. Take, for example, the late 70's to early 80's BASF LH series, and you will get an idea how many shades of orange there can be, from factory...
Regards
Martin
Regards
Martin