I'm skeptical of the "modern pitch" claim. It may be true. But it may be a low pitch that's not 440. A=440 was just one of the pitches that counted as "low" even up through the late 20s and beyond. Too many people think "low pitch" is synonymous with "A=440".
It MIGHT be pitched to 440 (that really is one of the possibilities), but other possibilities include at least 435 and 438 -- which, unfortunately, a lot of people will "hear" as playing at 440. ("Ya just have to lip it a bit.")
I don't believe pitch claims about these horns unless they come from someone I have reason to believe is really reliable and has actually put a tuner on the instrument to determine the pitch.
Gary Merrill
Wessex EEb Bass tuba (DW 3XL or 2XL)
Mack Brass Compensating Euph (DE N106, Euph J, J9 euph)
Amati Oval Euph (DE 104, Euph J, J6 euph)
1924 Buescher 3-valve Eb tuba (with std US receiver), Kelly 25
Schiller American Heritage 7B clone bass trombone (DE LB K/K10/112/14 Lexan, Brass Ark MV50R)
1947 Olds "Standard" trombone (Olds #3)