Date: 1918. Owned by Adam Sickmiller
The New Wonder family of single bell baritones consists of the 64I/65I and 66I/67I (pictured here). The 64I/65 are three valve top action instruments, the 66I/67I are three valve front action instruments.
What Conn said in 1926:
Without the least sacrifice in strength of the resulting tone, Conn Baritones offer the highly desirable feature of a small bore, which means, of course, ease of filling. Naturally the Baritone does not offer the broader tone made possible by the Euphonium, but for those who are compelled to play long and tiring engagements, or for young performers of lesser strength and experience, it cannot be excelled. Single and double bell models are included in the Conn line, and in the five-valve double bell model is found the extravalve which extends the register of the instrument and simplifies the fingering in many passages.