The Promo Cassette EUC001 was given away free in late 1983 with the 7" single of "Right By Your Side". It contains 5 songs left over from the Sweet Dreams LP recording sessions. It is very very rare! There are 2 cassettes here. One with a picture sleeve insert, and one without. One cassette has printing directly on the plastic cassette, and the other has 2 stickered labels (one over the other) with the misspelling, "Euryhmics" and "not for sale individully" They both have "Record Division England" on them, but one was obtained from the UK, and the other from USA. I am not sure about the origins of the labelling.
Thank you Jon!! and Thank you Yann!!