"The Elzadeer Taha Eldarir Collection": Christophe Bacher Resale Items, Figurine and Amulets (Some Sold before 2020)

Christoph Bacher Archäologie Ancient Art GmbH Gallery: Stubenring 1010 Wien. Another item from the dead grandfather collection.

Wooden Standing Figure of a Man
Culture: Egyptian
Period: Middle Kingdom, 2137-1781 B.C.
Material: Wood
Dimensions: 25 cm high
Price: Sold
Ref: 1116
Provenance: Private collection Ezeldeen Taha Eldarir, acquired 1930 at Salahaddin Sirmali in Cairo. Brought to the USA before 1948 and since then in a New York private collection. Condition: The front of the base reattached, arms missing. Some wear.
Description: Standing figure of a man with a calf-length kilt. The face with large eyes, broad lips and broad nose (suggesting a dating to the 11th dynasty), as well as short black hair. He is wearing a hidden amulet (Khepri?) on his chest, the separately worked arms are missing. Original base, as well as intensive color remains are still preserved.

This is lot 397 of the 2016 Arte Primitivo sale

Bacher has had other items from this collection:

Two Diorite Poppy Bead Amulets
Culture: Egyptian Period: Late Period, 664-332 B.C.
Material: Diorite
Dimensions: each 1.7 cm long
Price: Sold
Ref: 1299
Provenance:
Collection Ezeldeen Taha Eldarir, acquired on 15 May 1930 from Salahaddin Sirmali in Cairo and then brought to the USA.
Condition: Intact
Description: Two small diorite amulets in form of a cornflower with a broad flower head and jagged petals. The stem pierced for suspension. Since the New Kingdom cornflowers were worn as symbols for regeneration on necklaces or individually as an amulet.

and this Amulet of a Wadj Sceptre with a Lotus Flower

Culture: Egyptian Period: Late Period, 664-332 B.C. Material: Hematite Dimensions: 5.3 cm high Price: Reserved Ref: 1297
Provenance: Collection Ezeldeen Taha Eldarir, acquired on 15 May 1930 from Salahaddin Sirmali in Cairo and then brought to the USA.
Condition: Except for some minor wear intact.
Description: Exceptional hematite amulet in form of a papyrus sceptre with a crowning lotus blossom. The amulet is tapering downwards. On the rectangular head a finely jagged lotus blossom. The back is flat. On the lower part of the blossom a lengthwise hole for suspension. The papurus stem stands for the word wadj – "to be green, to be young”. The holder of the amulet therefore hopes for everlasting youth. The lotus blossom served as the symbol for protection and sign for regeneration. Rare form.

and so on, the's got a lapis lazuli "heart amulet" (more twee narrativisation, and: "Provenance: Collection Ezeldeen Taha Eldarir, acquired on 15 May 1930 from Salahaddin Sirmali in Cairo and then brought to the USA"). A haematite one, the same format and provenance and yet another one (getting a bit monotonous). Then a 'Rare Wadj Amulet with a Falcon Head' - another one bought on the 15th May...

Mr Bacher has some other items from this same man's collection, and this one seems to be unsold:

A Collection of 230 Faience Ushabtis Period: Late Period, 664-332 B.C. Material: Faience Dimensions: From 5 cm to 12 cm long Price: 28 000 Euro Ref: 1300 Provenance: Collection Ezeldeen Taha Eldarir, on 15 May 1930 from Salahaddin Sirmali in Cairo and then brought to the USA. Condition: Except for some abrasion and wear the ushabtis are throughout intact. Description: Important and large collection of 230 ushabtis of green and light blue faience, where the majority comes from the same grave complex. The figures depicted in mummiform, tripartite wig, false beard and with crossed arms. Most of them are holding the hoe in their left hand, in their right one the plough. Most of the hieroglyph inscription on the front.

If this is a 1930 purchase, how does the seller know these are from the same tomb?