Fine, they found another modem. 
Just to be sure ask seller to write down what is exactly written inside SIM compartment. On the ad it was E352U (1900/2100MHz). Locally sold modems are E352U2 (900/2100MHz).
Seller claims it is two bands on 2G. I am sure it is wrong, as all these modems are four bands on 2G. But three bands on UMTS is possible. Point is that I don't trust this information.
Just to be sure ask seller to write down what is exactly written inside SIM compartment. On the ad it was E352U (1900/2100MHz). Locally sold modems are E352U2 (900/2100MHz).
Seller claims it is two bands on 2G. I am sure it is wrong, as all these modems are four bands on 2G. But three bands on UMTS is possible. Point is that I don't trust this information.