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I've been unable to find a stock symbol for the company, as it went defunct well before the advent of online finance. It was definitely listed on the NYSE, in 1934 and in 1970; I'd found some resources on old stock tickers, but I wasn't able to find specific symbols. (The newspapers just show it as "Mesta Mach" or the like.) --grendel|khan01:21, 30 March 2018 (UTC)[reply]