Comparing 5 bells on a Bach trumpet

Bach Strad Bb tuning bell trumpet with 5 bells! Serial 111xxx, mid 70s. Awesome compression, zero red rot. This could be the ultimate all-round horn because it comes with a Bach 37 bell plus 4 Kanstul French Besson bells. The Kanstul bells are: 2 with a standard round bell crook, one regular gauge one heavier gauge, and 2 with a squarer bell crook, one regular gauge, one lighter gauge. For any style just select the bell to give you the appropriate tone color. Supplied with a Bach double case.