Manlove's Unity Soft Thread (two vintage 1000-yard spools)

Two unused vintage 1000-yard spools of "Manlove's Unity Soft Thread", perhaps 1950s, with original paper labels / wrappers with handshake trademark, the thread being wound around central card tubes (approximately 6.3cm long); one spool is light blue-grey (no. 50, shade 344), the other off-white (no. 50, shade 5639).  There is some wear, discoloration and marking / foxing to the labels; the thread itself is in good order apart from slight discoloration to the exposed ends.