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Here's a link to an ebay listing from back in 2016. It's in Europe, guess there's a chance this is your target:
https://www.ebay.ie/itm/Weber-Custom-ElIte-F5-Mandolin-/122088571604

Thank you Allen. I need this reminder to be more efficient in my practice. I am taking online lessons with pros for both insturments, voice too, will continue the discussion there.

Don,

Thank you for your excellent message here, and I appreiciate them all.

I agree it must be different muscles that are stressed. I play medium guage strings and bluegrass quite a bit...