Eric in February 1964
Eric William Valentine Hawes, identified by Antony Greenfield. The reverse is inscribed “Feb: 1964.” and appears to name the sitters as “Mr Heidecker + Eric.” The surname is a tentative reading.

Reverse and transcription
Feb: 1964.
Mr Heidecker + Eric.
The month and year are clear. “Heidecker” is a provisional transcription requiring confirmation. The inscription is retained as evidence rather than silently normalised to a different name.

Eric’s identity is supplied by the family; the date is supported by the handwritten reverse. The other man’s identity remains provisional.