Scopes I consider mine:
AP6": I knew the AP folks from working in the scope shop, and as soon as it was announced, I placed an order, in 1984. Delivered January 1985.
Pentax 85: From an AM seller who bought it from Dave Trott (who made a video about it).
Questar 3.5: Purchased via a Starry Messenger ad from an educator in Vermont, who got it for school outreach, but was afraid to let kids used it, and wanted to get enough money from it to buy a bunch of Astroscans. Irony is that I use it mostly for school outreach, and I don't worry about it.
C14: From an AM ad, a short road trip to meet a 2nd owner seller from RI. It had been de-forked and given a carbon tube by the original owner, and the seller mentioned that he was also sending his Celestron mount back because it wasn't pointing accurately. It took me a while to figure out that the primary wasn't glued down, and flopping almost a degree on meridian flip, which explained a lot.
Edmund 4" f15: An AM purchase. OTA came in a large wood box with all the standard accessories in close to pristine collection. Then, a few months later, I found the matching Edmund mount and tripod at Stellafane, also like-new, just as the swap tables were closing.
Of the loaner scopes (I realized as I was listing them that they are all favorites because of getting to meet the prior owner):
HOC Selsi 247 (my first classic), bought from a CL ad by a gentleman named Hank, who bought it as a high school student in 1961 in Pittsburgh.
Tasco 10TE-5 from Dionigi, delivered to me at NEAF, by his girlfriend, just days before he passed away. No box with it, but days later a partial 15TE with a box turned up locally on CL. I gave the scope to a student to restore, and restored the box to put Dionigi's scope in.
Unitron 140 OTA from a road trip where I met Johann in Maryland, and the mount came from Dave Trott.
RV6 from a local CL ad by a gentleman named Carl, who bought it as a kid in Illinois in 1975 and moved it all over the country.
HOC ATCO 1254 80mm f15 from Neil. Optically best of all the loaners.
In reading this over, I'm struck by how lucky and fortunate I've been in getting these.