Thelma:
...
> But where to get the, "slp650.icns"
That is probably just some image:
https://en.wikipedia.org/wiki/Apple_Icon_Image
Take any suitable icon image you have an run:
convert file slp650.icns
If you want it to look like the label printer,
just take a phograph of it, downscale it to be suitable
for an icon and convert it.
Regards,
/Karl Hammar