Vintage Soviet Russian USSR Elektronika MK 53 Alarm Clock Calculator Timer 1984

Vintage Soviet Russian USSR Elektronika MK 53 Alarm Clock Calculator Timer Calendar 1984. Tested and working good.Signs of corrosion on the back. No original screws on the back . I just put it together with one similar to original screw.No instructions how to operate it. You can see in picture what kind of problem has LCD display. For collector's, parts or repair.Will be shipped from Europe by Air Mail International priority mail.Thanks for lookingI will ship Worldwide. PayPalonly. Same flat shipping rate to worldwide as to US Mainland. If not clear about shipping price, please ask to calculte..