pick best does not mean pick oldest, news articles said study was identification, study subject says study was preference, study says study was preference. How you could possible reach the grand parents takeaway is seriously concerning.
Her mid-1800s Italian has completely different characteristics from a 17th century Italian. A string player spends months or years trying many instruments before deciding on one. I've never known a professional musician who cares whether they're playing on a modern or an older instrument, they care whether they have the right instrument for them. You have no idea what you're talking about. Please just stop.