I believe
(and maybe - ?? - I made this same remark on multi-color/pc-net) that I've seen this particular formerly-Wade's tuba sometime in the past.
(I believe someone had showed it to me - and met me at a gig - who was either considering buying it or selling it to/from some owner-after-Wade.
I don't remember how it was set up, but it looks (my attempt to interpret the picture...??) like the 5th valve is last, that the 5th valve's circuit is a GG semitone, and that the right-hand thumb linkage for it is routed underneath the other rotors...but I've been really wrong before, so please allow me to quote Emily Litella, if I find that I need to.
(If -??- I'm correct about the location/length of the 5th circuit, the valve combination for "low F" on such an instrument is 2-4-5, with the valve combination for "low F#" and B-natural being 4-5. The Ron Bishop-bought Miraphone 184 (that I bought "new" and customized) featured an added-on 5th rotor that offered either a GG semitone or a GG wholetone (but did NOT offer the old-style Miraphone "2-3" length)...so I have some (albeit distant past) experience with a 5th valve that is a GG semitone. That was my very first 5-valve tuba, and I put that valve on there JUST in time to cover those low pitches in the (complete opera) "L'amour des trois oranges" (Prokofiev).
bloke "who just can't seem to avoid
*stream-of-consciousness posts"
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