I don't think Spirocores were around in the 1950's or early 60's. Other metal strings were, but not these.
- Steve
Steve: To my knowledge Spiro's came out in the late 50's...but it took a few years for many bass players to make the change. There is a reference to that in the Ken Smith link I posted earlier. Also a suggestion from Uncle Toad on TB about Ray Brown changing from guts to Spirocores in the late 50's or so. Wikipedia has a reference to that: " The late Jeff Sarli, a blues upright bassist, said that, "Starting in the 1950s, they began to reset the necks on basses for steel strings."
Roger Stowers History of Kay basses also refers to the late 50's to steel strings generally: "Kay bass tops and backs held to 1/4" thickness (5-ply), however, as steel strings became popular, in the late 1950's, the possibility of table tension increased."
How about this one in doublebassguide:"The Lycon steel strings became most popular as the first steel strings in the late 50s. early 60s."......Paul Warburton. This helps for sure.
However....Thomastik has a long history of making steel double bass strings: From the company's website: "after many years of joint effort steel strings had been successfully manufactured. In 1926 strings of respectable quality were developed for all string instruments, from the violin to the contrabass. Post war production ( for export to US) resumed in 1950.
As an aside, I sent an inquiry to Thomastik re when the Spirocores were first sold in the US. I'll post their reply.
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