See, my idea is correct. This looks to have a German Varnish or at least not the golden Varnish I have seen on other H or F models.
BUT, that seal that says
Boosey & Hawkes is the latter company after Hawkes & Son. Founded in 1930..
This statement
"Hawkes & Son (later Rivière & Hawkes),[2] a rival to Boosey & Company, was founded in 1865" Is actually incorrect according to my research. Hawkes & Son came after Riveire & Hawkes dissolved in 1889. Wiki pages are not 100% guaranteed to be accurate.
Oh and Matt, thanks for the labels. This is a great find. It is the first 'H' model I have seen with a German label. Perhaps this one was sold too quick before it could be re-labeled as English.