Although the last item on CD 2 of this two-fer dates from 1951, the rest is from a very brief span (1947-49), and as the other reviewers say, it's all in amazingly good sound. Masters from the 78 era have surprising dynamic range and depth; bringing out their full potential requires good surviving sources and expert digital remastering. Dutton is fortunate to supply both here; in fact, these recordings consistently sound as good as Fifties mono.
I am not very sympathetic to Beecham's favored repertoire of light classics doled out in five-minute snippets. There are only a smattering of those here, and these generously filled CDs (75 min. and 76 min. respectively) have room for longer major works. For me the highlights begin with a sparkling Mendelssohn Fair Melusina Over., one of Beecham's favorites, and a forceful, dramatic Golden Spinning Wheel, one of Dvorak's great late tone poems. This Berlioz King Lear Over. surpasses Beecham's live version on BBC Legends both in sound and performance.
Then therre is his Haydn, one of this conductor's best composers. Although he recorded Haydn symphonies throughout his four-decade career, these readings bring together good sound and best performance. Sym. #40 was a rarity in the 78 era, not that it is common today, and Beecham's reading couldn't be more vivacious and alert. No fear of ponderous slow movements and plodding minuets here. Sym. #102 is much more familiar, of course, but Beecham doesn't seem as excited by it (he frequently appears bored in overly familiar music), so I'd call this second-best, good as it is.
Everything is played by the Royal Phil., newly founded by Beecham in 1947, which was to be his chief vehicle until his death. He recorded with them for little more than a decade, and it's astonishing to think that those years began with 78s and ended with stereo LPs. To be frank, Beecham recorded too many pieces and was over-praised for them, but Dutton has put together a collection that frequently shows Beecham off at his very best or close to it.