I have a very suspicious realization about Talismans, so I would like to ask your opinion and help regarding the question. Maybe my inner munchkin is playing with me.
Long story short: Transforming an invested item into a Talisman nearly totally rewrites it.
My Chain of Thougths - step-by-step:
- You can make your Talisman from an invested item as long as you opened it (and instilled all the enchantments into it if there is any).
- You can open a compound device as an invested item even partially by opening the most Vis-expensive part of it. (You can use the shape bonus of other parts, but not the material bonus,)
- After opening the compound device as an invested item you can work on it to attune it as your Talisman.
- As Talisman there are lots of different/new rules about this very special and personal item: you have a deep connection with the item, its capacity is independent of its shape and/or material; you can have attunements; you receive an extra +5 bonus to your Lab Total when enchanting your Talisman beside the normal S&M boni etc
This tells me that when you make something to your Talisman you fundamentally change that invested item.
My conclusion:
Eventhough a compound device was opened partially by opening only the most expensive part of it, after you transformed it into your Talisman the internal connection of the item parts is overwritten by your very connection to the whole device: all of it is metaphysically part of you.
Therefor you can use both the shape and the material boni, and potential attunements from all and every part of your Talisman. That is in line with ArMDE p. 262. last paragraph which explicitly mentions both shape and material boni from your Talisman.
My suspicion:
It seems to good to be true - but I can't find any contradicting RAW.
Example to demonstrate me problem (?) :
You have a M* Theory of 10. You can handle 20 pawns of Vis in a season and your Talisman can have 10 different parts at max.
You can have an
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- iron chainmail (armor) with
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- a solid human bone helmet shaped as a larger then normal (2.1) human skull and
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- the face/mask part covering the face is made from elderwood with a layer of silver on it,
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- having a piece of clear glass in one of the eyesockets;
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- a piece of Amber carved as a small cross attached to the neck, and
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- Mercury contained in the middle of the small cross,
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- a small lead shackles runs around
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- the leather belt made from bear hide (permanently connected to the armor) which has Ʊ
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- a polished bronze mirror on it.
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- As a final piece an eyeball sized Jade is in a socket on the chest just under the chin.
The most expensive part is the chainmail itself: only a little bigger then large (but not truly huge), and base metal, so 4 x 5 = 20 Vim Vis to open.
After I.) opening that part of the whole 'composition' II.) you can attune it as your Talisman and III.) live happily with all the S&M boni of all 10 parts of your Talisman. Right? (Here is a meme with Anakin and Amidala
)
- As a final piece an eyeball sized Jade is in a socket on the chest just under the chin.