Greek Capital Letter Omicron With Dasia And Varia
HTML Entity Browser Test:

U+1F4B is the Unicode hex value of the character Greek Capital Letter Omicron With Dasia And Varia, which is categorized as "uppercase letter" in the Unicode 6.0 character table.

In addition, U+1F4B is a composite character comprising of one or more other Unicode characters modified or combined.

Unicode Character Information
Unicode Hex U+1F4B
Character Name GREEK CAPITAL LETTER OMICRON WITH DASIA AND VARIA
General Category Uppercase Letter [Code: Lu]
Canonical Combining Class 0
Bidirectional Category L
Decomposition Mapping 1F49 0300
Mirrored N
Lowercase Version U+1F43
Unicode Character Encodings
Greek Capital Letter Omicron With Dasia And Varia HTML Entity Ὃ (decimal entity), Ὃ (hex entity)
Windows Key Code Alt 8011 or Alt +1F4B1
Programming Source Code Encodings Python hex: u"\u1F4B", Hex for C++ and Java: "\u1F4B"
UTF-8 Hexadecimal Encoding 0xE1BD8B
1 To type a Unicode symbol in Windows, hold down the ALT key and enter the decimal or hexadecimal code provided using the numeric keypad. The decimal alt code (Alt 8011) will only work on computers with support for this Unicode character in the active code page. The hexadecimal alt code (Alt +1F4B) will work for all Unicode characters provided Hex input from the numeric keypad is enabled.
* If the Greek Capital Letter Omicron With Dasia And Varia character does not display correctly in your browser, you may not have a Unicode font on your system that supports this particular symbol.