The 1st valve wrap is the one seen with the 5th valve of B&S F tubas like bloke's. It is the second sample of this wrap coming to my eyes within very few days.
The Tivoli Gardens' boy guard band retires its members the year they turn 16, so their tubists often are fairly short when they enter the band at age 11 or 12. The band therefor ordered two 4 valve B&S tubas that had this configuration for their 1st valves so that the leadpipes could be set very low. One repairman was very surprised, when he pulled the slides and could not look through the valve block with all valves untouched.