According to Conn loyalist page the 78H was introduced in 1921/22 and discontinued in 1928 with # 3 1/2 bore. (.517)?
Then re instated in 1932 with #3 3/4 bore (.522).
The serial # on mine shows it made in 1929. Supposedly they weren't made that year.
It has a rose brass 8 inch bell. Nickel inner slide. Brass outer slide.
I don't have anything to measure the bore with so It's either a .517 bore or .522 bore.
can any Conn experts here add any insight to this.
