An oldie, but goodie - that's how I'd describe this 103G detachable bell Alexander. The valves have lowish compression, but the horn plays quite nicely and has a great classic sound. There are a few patches/guards up at the top where one would carry the horn, and another larger patch inside the flare. The leadpipe has the European tapered shank.
'Guppy' reading: #3 (out of 8, with 8 being zero compression.) Anything over 2.5 begins to feel a bit 'swimmy'. A brand new horn will have a reading around 0.5-1.