This dark green NCL 5225 MFM hard disk has a stainless steel handle at one edge, which is held in place by two screws. On the edge opposite the handle there is one round empty hole for a screw. Just below the hole on the circuit side there are two round inspection stamps. One with a Roman letter "S" and the other with a Japanese character printed in it.
Manufacturer
National Computer Ltd.
Place Manufactured
Japan
Identifying Numbers
Other number
C00620383
Found on white sticker on circuit side
Other number
k200156D
Printed in black in top right corner on circuit side
Other number
NDC5525
Stamped in white in top left corner (if disk is oriented for writing to be read left to right)
Other number
YR-294V
Stamped in along the middle of the insertion edge juat above "Made in Japan"
