Slowakische Kassettensite mit allen Einlegern

[EZ647]

Second package.
SKCs are very collectible and expensive cassettes.

But there are many cassettes where I have no idea of some details like year of release or production.

Grundig are both about Basf, very old chromdioxides.

Norelco, probably Philips understandably, Made in Austria, the shell is welded. US market?

Ross is probably China.

Expert Made in Portugal, probably AudioMagnetics?

Boots of course ICM Switzerland, 1982 or newer?

Microcassettes, both have identical serial number, so Philips would probably be Sony?
I don't know the year. Made in Japan?

Regards EZ