These disks came with a bundle of MS OS/2 SDKs. They are not original but backup copies.

The handwritten labels read: 

OS/2 1.21.187 (GB)
Version 1  Level 00
VOL ID: OS/2 INSTALL       (etc)
PRE-RELEASE

Checking the OSO001.MSG file on the Install disk identifies these as using the Microsoft OS/2 v1.21 command interpreter.