Looking at the photos on the Radio Museum, apart from the differences mentioned by Paul, and the rubbed off screen printing is obvious, the R25 covers the full FM band to 108MHz, whereas the R24 only covered up to 104MHz.
https://www.radiomuseum.org/r/roberts_r24r_2.html
https://www.radiomuseum.org/r/roberts_r25r_2.html
Mike
https://www.radiomuseum.org/r/roberts_r24r_2.html
https://www.radiomuseum.org/r/roberts_r25r_2.html
Mike






