And, although, statistical measures have been used to supply as accurate a table as we are able, it is still constructed mathematically, and though various resources have been used to further accuracy, sources have not been exhaustive, so some error is likely.

Like most serial number lists, this is a constructed table. This list is intended to be used only with brass instruments as it appears that a separate sequence was used for woodwinds. Since only the trombones have a serial number on one part (the slide) and the engraving on another (the bell), and they are interchangeable between different horns of the same model, switching parts may account for a lot of the confusion for determining where those classic horns were made.Pan American Serial Number List Horn-u-Copia An Index to Pan American Instruments It would certainly be more efficient for Conn to make a run of the same instrument before moving on to another.

I don't remember where I heard this, and can't verify it, but it makes sense. They would pick up the serial numbers from where they left off - so the first trumpet of a run where they had just finished making 88H's would have the next sequential serial number. Supposedly, Conn would make a run of certain instruments (based on expected sales) and then would reconfigure their tooling to do a run of a different instrument. I was told once that Conn serial numbers are sequential, but they pass between different instruments. She had 2 Conn horns with N serial numbers - both said Elkhart on the bells. I had another thought on this idea of slides being swapped and messing with the consistency of the various bell engravings vs.

Conn trumpet serial number lookup