The first fully programmable calculator with program storage was the HP-65 introduced by HP in 1974 with an MSRP of $795. TI came with a response in 1975 - the SR-52 with a price tag of $395. Here's my original, purchased in December 1976 when I was a sophomore in high school. I used this calculator all through high school and college and it served me well.
After years of sitting, the battery compartment corroded and the card reader stopped working. After more years the calculating unit itself fried and started to answer with jumbled displays.
I set out recently to restore it. Repairs included a rebuild and tuning of the card reader, rebuild of the battery pack and replacement of the main processor board (from a donor calculator). It now is fully working.
I still have all the original stuff that came with the SR-52 including the Game pac and blank magnetic card pac. Original sales receipt too from 47th Street Photo, December 8th, 1976 showing a big discount off of retail price!
The one shown here I purchased recently on eBay. Actually, I bought two of them and chose the best parts from both to make this one. Both of them needed the card reader repaired. I ended up selling the other one for enough to pay for both.
Here are some HP-67 accessories including a leather case (which is really from an earlier HP-65), an owners manual, a charger and the Standard Pac of magnetic cards. The charger needed a power transistor replaced.