I have a Curta Type 1 calculator purchased by my father in the 1960's. I have not had any use for it since I purchased my new HP 35. SN 40201. The case has light scratches on the bottom and still retains the "O" ring. The machine is as new, bright and clean. Sorry no box or instructions. $1000 USD. FOB Alaska. Pictures can be sent. If allowed I can be reached at mccannta@hotmail.com. Thankyou PB.