Accidentally deleted Mate Volume Control icon from panel

[jd1008]

Tried several things, none restored that exact icon.
Would a reboot restore it?

Right click on the panel and select Add to Panel
does not list volume control among the items listed.
I created on the desktop a launcher, and the command I set to
/usr/bin/mate-volume-control-applet
then I dragged to the panel.
But it does not work as it will not show me the horizontal
sliding scale of volume level.
Any suggestions?