For me, the glyph looks like the proposed and accepted U+2BF0 ERIS FORM ONE (see pipeline; proposed as U+2BBA in L2/16-173R).
- Karl -- Am Dienstag, 26. September 2017 um 06:48 schrieb Leo Broukhis via Unicode: >> Wikipedia >> (https://en.wikipedia.org/wiki/IBM_1620#Invalid_character) >> describes the "invalid character" symbol (see attachment) as a >> Cyrillic Ж which it obviously is not. >> But what is it? Does it deserve encoding, or is it a glyph >> variation of an existing codepoint?