Thank you to all who responded.  A number of people have replied to
me that it appears to be an O-roll.  I had forgotten that they are the
same width and holes per inch as a standard 88 note roll.  I checked
the "weird" holes against the published data on its and, sure enough,
those slots at the end and beginning of the tunes do match up with
cancels for various items.

This particular roll came on a custom-built calliope.  The builder used
the stack and roll frame from a Baldwin player.  So whether he spooled
some O-roll music onto a standard core or found a Universal roll as you
described, will most likely remain unknown as the leader is missing.

There is no number at the end of the roll sheet.  Tunes are "National
Emblem", "Stars and Stripes Forever", "Dixie", "Turkey in the Straw".
Nice arrangements.

Jim Quashnock