Looking for a grave in Vienna #austria-czech

Yehuda Rubin

My third great grandfather, Wilhelm/Wolf Steinfeld, is presumably buried in the Vienna Zentralfriedhof. He died on March 23, 1911 (death record posted below), but no plot number was listed. 
How would I go about finding his grave? What are the chances that it would still exist? The cemetery had no record of it when I called.
Thanks in advance!
The record is below (he is the first on the left).

Yehuda Rubin
Lakewood, NJ

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