I'm bad about taking a short story and turning it into something long winded and boring so I'll apologize before I even get started. I had plans to read through the entire thread before I really started posting to it but best laid plans as they say. Posted these in the 2019 Garage Sale thread but they don't have much appreciation for woodworking hand tools there. So I'm going to crosspost here because I think you guys probably can understand and appreciate my enthusiasm to find these hand planes.
The seller has posted a few of these planes (IIRC, 2 #4s, #5 and #78 in the original ad) on CL months ago and was asking $200 each. At that time, I respectfully sent a response asking where they came up with those prices. The woman let me know she had no idea and it was just that she thought they were very rare. We exchanged lots of email and after three or four months of trying to get together today it finally came off. I went there today honestly expecting I would leave without buying anything but at least I'd be able to educate her a bit on what she had and what she might realistically expect to ask for them. Turned out she had the #7 and Union #6 which weren't listed at all. We talked about how the planes she had were not in fact rare but that some were desirable user planes and why they weren't "rare collectibles". We also talked about what she might ask and might expect to get. In the end she said she had absolutely no attachment to them and would like to see them go to someone who would use them and could appreciate them. I was only interested in the #7, #5C and the #78 and I let her know that. I made her an offer for those and told her it would be okay if she wanted to think about it and I could come back if she wanted to sell later. She immediately countered with a price which was higher by the amount I would have offered additionally for the Union #6 but she wanted me to take them all at that price. I asked if she was sure and she said yes but she wanted to keep the display shelf they had lived on for years. Done deal!
Two of the planes are junkers (Corsair #4 (made by Great Neck) with plastic handles and a #5 unmarked but with a Wards Master iron and a Ace Hardware lever cap). The Union #6 feels like a great plane but it needs a lateral adjustment lever. All except one of the Stanley planes appear to be in good condition with original parts and from the '20s. The #7 and #5C appear to be type 12. There is a Stanley #4C type 13. The #78 has all the original parts and looks to date between 1910-1925. I don't know much about the Union #6. The 2nd #4 looks like a Stanley but it isn't marked Stanley and has a whale tail lateral adjustment lever (also unmarked) but for all other intents and purposes it sure looks like a Stanley #4 to me. One last point on this "other #4" it has the thickest sides I've seen on a #4. Almost 1/8" thick.
I think all of these Stanley planes and the Union #6 will be great users (some for me and some for others).
Sorry to be so long winded but it's super exciting to find hand planes! At least for me it is. Hope some of you guys enjoyed my story. If not I'll try to tone it down a notch or two in the future!

Here are a couple of pics...