As a follow up to the question why does the orchestra tune to the oboe, I'm asking since when this became standard practice? For example, was it since the Modern oboe, or already since the Classical oboe used in Mozart time? Did Bach use the Baroque oboe to tune his orchestra?
If not (any kind of) the oboe, which instruments have been used to fulfill this function? Comments have identified: cello (which in turn is tuned by a chamber/continuo organ), clarinet, etc.