My observations and conclusion:
There is for sure an evolution on the 1987-2004
type stamp. The separate cross, line and other details are part of the evolution. On the picture to the right is a very nice edition of the last type used close to the new stamp in 2004(without the crossbow). This is on the Cybertool 34 that I did buy in 2002
and therefor I can date it 2000-2002 and most likely this is part of the 2001 batch made.
On all the 1987-2004 type variations that you can see on the main line
stamping page the production variations are there and probably there could be things done for the protection of the Victorinox products. For sure the emblem and tang stamp is very important on a SAK. This is the identity of it and the evolution is there for
it. It is very interesting for me looking on all the small details and I get the feeling that there are some small variations done for the further protection of the products. I am rather sure it is so. I am also rather sure many small differences are only
production variations. I do believe there are more facts to be found on the 1987-2004 type without a doubt. One thing is for sure that production variations can be found on batch to batch and the depth of the stamps with small details are because of production
What is the main line of knives is also sometimes difficult to be sure about because of special products and knives for advertising.
The 1987-2004 type used on the 2001 CyberTool 34 is very even and with nice details. The small spot at the crossbow is from use. This tool represents a very innovative introduction
by Victorinox. It was introduced from the year 2000. There is also a small detail on the letter O on this stamp that is interesting!