While reading this list, keep in mind I was born in February of 1985. Some of the drugs on my list hadn't been made for at least 20 years before my birth. I consider that extremely rare.
Basically most of the drugs on this list were found in my grandmothers house. When my uncle was 15 he got thrown out of the house for selling drugs and my grandmother coming home from work early to him and a bunch of junkies my grandmothers age shooting up dope at the kitchen table. His room was the only room upstairs and she never went up there again. A while back I went up into that room and I found a shitload of drugs.
Quaalude-found a bottle of them in my grandmother's medicine cabinet in 99, among other things. They were filled in january of 78. I really have no idea about this one. I am almost certain that 22 years is too old to produce any effect and I'll never know the truth because I was on many mg's of xanax when I took them. I will always regret this one.
160mg Oxycontin- yeah I had 177 of these at one point. I didn't even understand the value of them at the time, but either way I probably would have done the all, like I did. It was an amazing time in my life. I didn't need for opiates for a looong time. My grandmother apprantly got prescriptions that she didn't take, and collected them. There were 2 scripts for 90, one had 1 missing, the other 2 missing. Apparently the 160mg was too much for her but the 80's weren't. Every single bottle of 80's were empty. She must have not split them in half because of the warning on the bottle about taking the pills intact.
Hydromorphone-2mg, 4mg,8mg pills. I know its quite rare to get a doc to prescribe these, and even rarer to find someone who realizes the recreational (read: IV) value of them, and even rarer to get someone to part with them when they do realize the greatness that are these pills. Unfortunately every pill I did was in a 2 month span. They all came from the same person, and they were eventually weened from 8mg to 4mg to 2mg to nothing. The End of my fun.
100's and 100's of sealed bottles of IM ready Ketamine- Not that rare, but I haven't seen one for 4 years, so rare enough for me.
Fentanyl- In many forms. The 1600 ug lollipops, the patches that contain 10mg for 72 hours, and the so called "80"s that were in reality better than 80mg of oxycodone I've ever had!
"Black Beauties" (illicit amphetamine)- From what I understand these were around in like the 60's. I'm not really sure I felt anything off these. These were found in my Uncle's room. If you have ever seen the Johnny Cash movie,
Walk the Line, this is what Cash was hooked on. Just a fun little tidbit.
Purple Haze LSD- again, around in the 60's from what I understand. I definitely tripped sack off this shit. It was stored in foil in a dry, air-tight container that was kept in a dark closet. I don't know if that makes sense, but I definitely tripped off the 40 year old acid.
Desoxyn- yeah, yeah. Pharm grade meth. Boring.

I hate meth. I like downers. But rare, nonetheless.
Valium for IV-It was at the hospital, but it was still cool to do IV valium. It knocked me on my ass really. At the last minute (as I was literally being wheeled into the OR), they casually informed me that I would need a catheter. I freaked out. haha, it turns out they took my appendix out in a way that was more painful and left a permanent scar, but that was better that a catheter. I have had one, I will never have another.
Buprenorphine 0.3mg IV ampules- not available in my country at all. I would consider these quite rare.
Pharm grade Heroin- The holy grail. The absolute best for last. It doesn't matter how, it doesn't matter where. All that matters is that I was doing calculated shots of pure dope, and it was incredible. I love heroin so much. I really want to move to the country my vials came from so I can be prescribed it as well for maintenance.
Thats it.