tl;dr
I'd still like to know if the proposed theory in my second bump below is right. Do tanks on SC/farming teams use two-handed double vamps to get below 50% health before aggro'ing?
For everything else below, I think I've got as much PC as I can reasonably expect to be available. Thanks to everyone for the replies and help!
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I realize these things are tricky, but I'd sure appreciate any insight or history you can offer me on these.
Potentially Double Vamp Half Moon (Shortbow)

r10 15/-1hp gold Half Moon
My understanding of the market for double vamps led me to believe they must be one-handed for using a -50hp cesta, too. However, a couple weeks ago I saw claims that there is, indeed, a market for two-handed double vamp weapons. Could anyone explain to me what's driving demand for those, and could anyone help me PC this funky bow?
EDIT - Nov. 28 - As people have asked me about this one specifically, and I like the idea of leaving breadcrumbs for anyone searching PC for similar items in the future, I wanted to leave a link here to my friend, fallenangel's sell thread where this bow is being sold. I handed it over to him to sell on his thread, as I didn't think it would fit well in my upcoming thread of mauso stuff (which I hope to get posted today or tomorrow and will try to leave a breadcrumb link here for, too.)
r8 +5 Gothic Sword
ninja'd in a few min. later Any current PC for a max, gold, r8 +5en inherent Gothic Sword? I'm just curious and thought I'd ask here, too.
EDIT - Thank you for the replies on this, seriously! I told the friend I had hoped to lure back to GW with the potential bathtub full of pink jelly for his old sword how two different people agreed, "100 to 500 e." His response was along the lines of, "Wow, seriously? Interesting. But muhahaha they can never have my sword! It's mine!" followed by, sadly, his reply to my asking him to come play GW anyway, "meh, no, I don't wanna."
So I do appreciate the replies on this, and I will leave it here for posterity. But my own desire for PC on this particular sword is over now. Anyone who still wants to reply, do feel free, for it might yet help the next guy!
Halloween 2010 Mausoleum "Commandeering a Mortal Vessel" - Oddly modded drops, no triple-mods

EDIT - Nov. 30 - The ones I've decided to sell are now listed for sale here. I'll leave notes on final sale prices before shutting it down.
I'm thinking about selling off all this remaining stuff I kept from the 2010 Halloween fun with the glitchy Mausoleum. I realize such things are practically impossible to PC ahead of time, but I'm wondering if anyone can offer opinions on reasonable reserve prices or past sales of similar items. I was out-of-the-GW-loop for a good portion of the time these were around and traded. So, we've got in the above picture ...
r10 max gold Hooked Scythe, inherent 15^50
r10 non-max blue Raven Scythe, inherent 11v50
r10 max gold Pronged Spear, inherent 15stance
r10 max purple Broadhead Spear, inherent 16v50
r6 non-max blue Tribal Spear, inherent 12^50
r9 max gold Reinforced Buckler, inherent 10vBlunt & suffix* +60wH handle
r10 max gold Ornate Buckler, inherent -daze & suffix* +58wH handle
r10 non-max blue Crude Shield, inherent +6vUndead & suffix* +18 handle
r10 max gold Shamanic Wand, inherent +4wH & suffix* 10HSR wrap
r13 max gold Golden Pillar, inherent +5wE & suffix* 19% HSR wrap
r9 max purple Idol (normal/hand skin,) inherent +8v50 & suffix* +26 core
r13 max purple Earth Scroll, inherent 8vUndead & suffix* 17% HCT core
r12 max purple Jeweled Chalice, inherent 8% HSR all & suffix* 9% HCT core
* For these items, those suffix mods can be salvaged off but cannot be reapplied.
I figure most of them are simply curiosities and not at all likely to lead to any bid wars, but perhaps the gold scythe and spear are worth quite a bit?
Thanks in advance for any help you can offer!
Cheers,
Luny
I want it noted for the record that I resisted and published this OP without even one bullet list or spoiler button anywhere! I didn't even use indents.