Wurlitzer 10,000 series ledger page #74. This page shows
Mandolin Quartette #11487, which is the highest numbered
Mandolin Quartette to be marked with a small red cross, although
according to the indicated dates it is not the last one so
marked to be shipped. According to a ledger note: Numbers marked
with small red cross do not apply on order of 500. No
information, other this this note, is known to exist regarding
the "order of 500."
Wurlitzer 10,000 series ledger page #252. This ledger page
illustrates the later tendency to append the standard column
mark with certain important attributes for an instrument, such
as an "F" for flute pipes, "V" for violin pipes and "X" for roll
changer. This page also demonstrates the odd use of "F" in both
a standard and reversed (or backwards) format, depending upon
who was making the ledger entry.
Wurlitzer 10,000 series ledger page #294. This ledger page
further illustrates the use of one or two appended characters to
the omnipresent column mark, alphabetic characters that indicate
the type of pipework and/or if a roll changer is installed. It
should be kept in mind that the application of appended
attribute characters is inconsistent, oftentimes within the same
page. At the beginning of the ledger there are no appended
characters suggesting special attributes, although there are
occasionally added marks, such as a small cross, but these have
no bearing on the physical characteristics of an instrument.
However, toward the end of the 10,000 series ledger pages the
use of appended attributes becomes more and more common, and for
the 65 note instruments with pipes more the norm.