Hello sounds like a nice stash of special MB tools. You already picked two good ones. In the BBB it shows most special tools and the part number for them. You will see a part number stamped on them.
Lots of good special tools. Some useful for the M130 engine or the W113 chassis could be ....................drive shaft wrenches, special two handled wrench for axle bearing slotted nut, and special sockets for slotted diff, trans nuts, any valve adj. tools. special cone mandrel for installing rear suspension thrust arm at the front, nifty compression testor with read outs, any drain pug toosl, much more check your BBB.