I weighed mine. I bought it second hand with some modification. Fenders, carrire rack etc.
After I removed the unnecessary stuff and restored it to "factory" status, it weighted 24 pounds.
I was surprised.

Since then, I replaced the tires with thin high pressure tires (Schwalbe Stelvios) and the saddle with a lighter racing saddle. I added some weight by putting on a longer stem. It now weighs 23.5 pounds.

Jur,
How did you get it down to 19 pounds? Where was the extra weight?