1929 and 79 are the only ones as zebras, yes.
The bull is on the coat of arms of Turin:
This goes back to Roman times, at least associating the "Taur" part with the bull. The pre-Roman people were Celtics called Taurini, but this word probably comes from the Celtic for "mountain people".
Bit of a side note, but when Hannibal famously passed over the Alps with his army (including elephants) to attack Rome from the north, he encountered the Taurini and took their capital after several days of siege.