Pye 123 but jewel case

[Mike Watterson]

You sure it's not a Q4?
Early https://www.radiomuseum.org/r/pye_jewel_case_q4q.html
or
Late https://www.radiomuseum.org/r/pye_jewel_case_q4q_2.html

There are three earlier "Jewel case" models using valves.

There though at least 3 versions of the P123x but none are case style.
https://www.radiomuseum.org/r/pye_123bq123_b.html
https://www.radiomuseum.org/r/pye_p123bqrp_123_bq.html
https://www.radiomuseum.org/r/pye_p123bqr.html

Another transistor model in a case with lid
https://www.radiomuseum.org/r/pye_q3.html

And the "cigar box"/music box style
https://www.radiomuseum.org/r/pye_president_q1q.html

Edit: I think ALL the P123 versions are before 1960.