Hello!
Since my concession expires at the end of August, I took a look
and there I found out that TÚ SR has a new address: Factory no. 7, PO Box 18, 810 06 Bratislava 16, and that on 1. 7. t. r. the TÚ SR becomes a client of the State Treasury and the previously used account in NBS 19-6227-062/0720 is changed to an account in the State Treasury no. 7000136022/8180.
Apparently the postal order type A is no longer valid either, because when I asked for a voucher at the post office they gave me Postal money order U.
73! OM4DN