Scotch Classic C-90 Compact Audio Cassette, originally uploaded by :Duncan.

made in Italy

45 minutes recording each direction

Black body with horizontal line patterns. Cream (once white?) label with black lettering.

Scotch Dynarange 90 Compact Audio Cassette, originally uploaded by :Duncan.

made in Italy

2 x 45 min

Transparent body with horizontal lined patterns. Sky blue label with white and black lettering.

TDK SA-X90 Compact Audio Cassette, originally uploaded by :Duncan.

High Bias 70μs EQ

Black body with prominent rectangular grid pattern. Gold, white and black labels with gold and green lettering.

TDK UX-S 90 Compact Audio Cassette, originally uploaded by :Duncan.

HIGH BIAS 70μs EQ

Super Fine Uniaxial

TYPE II (CrO2)

Charcoal grey body with large transparent window. Gold lettering.

TDK SA-X 90 Compact Audio Cassette, originally uploaded by :Duncan.

HIGH POSITION TYPE II

High Bias 70 μs EQ

MADE IN JAPAN

Black body with rectangular grid. Gold label with gold, black and green lettering. Flashy.

Sony UCX-S 90 Compact Audio Cassette, originally uploaded by :Duncan.

TYPE II (CrO2) POSITION

Black body with grid pattern. Silver and red label with prominent direction arrow.

Maxell UL 90 Compact Audio Cassette, originally uploaded by :Duncan.

Normal Bias

120μs EQ

JAPAN

Black cassette. Red Label with white, red and light blue colouring. Triangular patterning on body.

TDK SA-C90 Compact Audio Cassette, originally uploaded by :Duncan.

EQ 70 μs

Made in Japan

Compact Cassette

From the late seventies. Black cassette with white label with brown and green. Rectangular grid patterning on body.