MS-DOS 2.10 - WANG OEM
Released 1984 by WANG Labs, INC. 
(MSDOS.SYS 2.01 with Command 2.10)

Important: This does not run on IBM PCs. 
The WANG Professional computer was not hardware compatible with the IBM PC.

Disk 1:

      PROFESSIONAL COMPUTER
    SYSTEM DISKETTE 1   1 OF 3
VERSION 1.22 734-0008C S/N-103209
 COPYRIGHT 1984, WANG LABS, INC.

Disk 2:

      PROFESSIONAL COMPUTER
    SYSTEM DISKETTE 2   2 OF 3
VERSION 1.22 734-0015B S/N-109048
 COPYRIGHT 1984, WANG LABS, INC.

Disk 3:

      PROFESSIONAL COMPUTER
    SYSTEM DISKETTE 3   3 OF 3
VERSION 1.22 734-0059A S/N-108455
 COPYRIGHT 1984, WANG LABS, INC.