I found a bug in Unicode

Date/Time:    Mon Sep 20 16:55:42 CDT 2010
Contact:      allanb@thinkcomputer.com
Name:         Allan Bonadio
Report Type:  Error Report
Opt Subject:  OCR dash vs customer acct num

There seems to be a transposition of characters U+2448 and U+2449 (see http://www.unicode.org/charts/PDF/U2440.pdf).  In fact the '=' lines seem to hint at the right answer. (I've been doing ACH and reading checks so I know.)

The glyph listed for 2448 is the 'on-us' ⑈ indicator for an account number, within a particular bank. Its name is listed however as 'OCR Dash'.  If you look at any check in your checkbook you can see that and also U+2446 for the routing/transit number (which is correct).  
The glyph listed for 2449 is the 'OCR Dash' ⑉ character - it looks like a dash.  But the name is 'OCR Customer Account Number'.  
Some corroboration:
http://www.barcodesoft.com/e13bmapping.htm
http://en.wikipedia.org/wiki/Magnetic_ink_character_recognition
http://www.printerm.com/fonts2C.htm
http://mindprod.com/jgloss/micr.html

Date/Time:    September 23, 2010 9:16:07 PM PDT

Dear Allan,

Thank you for your report. It looks like the Unicode editorial committee will have to give you a gold medal for discovering the longest standing bug in the history of the Unicode Standard! It goes back to Unicode 1.0
Just FYI,  the proximal source of the 4 characters 2446..2449 is the IBM Graphic Character Identification System. The 1988 version lists:
S0600000 Transit Symbol, MICR
S0610000 Amount Symbol, MICR
S0620000 On Us Symbol, MICR
S0630000 Dash Symbol, MICR
Those then correspond to 2446..2449, with identical glyphs.
You can see that the aliases in our name list derive from the IBM corporate names for the glyphs.

Your report will be filed as Other Feedback and go to the UTC, so it can be used as the basis of a future decision. 
Thanks again for your invaluable contribution.

Regards,
______________________
Magda Danish Senior Administrative Director The Unicode Consortium 650.693.39.21