No, Udyan was numbered as 129/130 Exp. Before, 1984 it was part of the 13/14 MAS-BBVT Janata Express where SBC coaches were combined at GTL.
129 EXP: DR 20:30 -> SBC 1950
130 EXP: SBC 08:10 -> DR 06:45
Renumbered to 6529/6530 during late 1989 as a result of SR PRS implementation.
1-2AC,...
more... 2-FC, 1-RMS, 4-II ORD, 9-SL.
Later, from 1991 it was hauled by twin ED WDM2 due to 5 extra SL/II coaches between SBC-SUR.
There also existed the famous "Return Journey Quota" system to book return tickets from each end
SBC: 2AC & FC: 4 berths; SL: 48Berths