170 g / m²: the number must be right. I respect 100 pieces. The thickness as compared with conventional 80 paper. And the weight with other 10 x 15er cards, where I knew the thickness of the paper. Both bills have 170 found.
170 is of course something labbe Riger. But at the special price was clear from the outset that they will be thinner. I still bought on risk, see below.
Other index cards have in my estimation perhaps 230 g / m². The difference is great, because they are properly fixed. But they just come at a price and who is not so fixed consumption: this would indeed generally for writing and sufficient for sorting and are indeed roughly twice as thick as standard 80-print paper.
It is also true white, shall be as white.
The print quality of images I have not been tested because they are not intended for it.
As postcard: that was my risk purchase. Because I send many photos as a postcard. And postcards must have a thickness of 160. Since I have done a particularly good bargain.
For 170 g / m²: surprisingly affordable. And that with a brand medication manufactured by Herlitz.