I've got the same one. Great shooter. Still have the box too in about the same condition as yours but the gun has many bb's and co2 cartridges though it. Was my first gun at about 7 or 8 years old back in the 60's. Although my father taught me respect for firearms so it is still in very good looking condition but not like new as yours is.
After not using the gun for probably 40 years or so I tried it and found the seal at cartridge leaks badly so unable to use it. Went searching for seal kit or someone who could repair it and kept being told no parts available/unable to repair. Found the "Daisy museum" website and they have a (hardly used) forum. Posted there asking for repairs and someone told me about someone else who worked for daisy and might be able to repair. I contacted him and he said he can fix but I have not yet sent it out. Actually it's packed up ready to go but either walk out of the house and forget to take it with me or take it and don't have time to stop at PO. Planning on getting it out this week.