Ricoh KR-10

"-Oh, your camera doesn't look well!
-Yes, it's broken!
-how much for this wreck?
-5 euros.
-O.K. I often need little screws."
Back home, I changed the batteries an made a little cleaning, It works very well. I got with it the original case, an U.V. filter, and the strap.
Without battery, if you press the release button after cocking, the f-stop closes and the mirror gets upwards, the shutter (Seiko-Copal 100% électrically controlled) doesn't move. Here is the "broken" aspect! You can return to a normal state by turning the shutter speed knob to the "X", only "manual" position (on the Minolta X300, there is no shutter-release possibility without battery)
The KR-10 shows the same problem as the KR-5: the shock-absorber foam for the mirror breaks up and becomes gluey.
The lense's name is Rikenon, not Riconar, Sometimes, when the japaneses get told that a name sounds bad in some countries, they change it. Is it the case here?