Vintage (early 20 century) paint set for china in a George Rowney box, full

A metal box has scratches (mostly on the bottom) and is stained with oil paints. The inscription on the inside of the lid says “George Rowney London”.

Contents:

1. Seven (7) brushes of various degrees of wear and tear
2. Metal spatula with a wooden handle
3. Chisel? (for the lack of better term)
4. Four (4) bottles with cork stoppers labeled as:

• Mother of Pearl (“The Williams Art Importing Co, 499 College Street, Toronto”) – contains viscous fluid
• Luster Ruby (“Ceramic Art, 181 Young Street, Toronto”) – contains viscous fluid
• Vitrifiable Liquid Lustre (“John R. Thompson Artist’s Materials, Hamilton ON”) – dried out
• Best Medium for mixing paintings and tinning with vitrifiable Powder Colors (“prepared for John R. Thompson, Hamilton ON”) – the sticker is greasy; contains a small amount of oily substance

1. Roll of white fibres tired up with a piece of pink string
2. Paint mixing plate, white, ceramic, stained with multi-coloured paints
3. Seventeen (17) vials with china paint powder, all full, with cork stoppers labeled as:

• “John R. Thompson 68-70 King St. E, Hamilton Ont. vitrifiable colors for china”: apple green (x2), finishing brown, bronze green 20, shading green 25, outlining black 25, blue green – 7 in total
• “John R. Thompson 64 King St. E, Hamilton Ont. Artist Goods and picture frames Thompson’s select vitrifiable colors for china”: yellow brown 30, peach blossom 30 x 2, pompadour 35, banning blue 30 – 5 in total
• “Overglaze colors for porcelain Hair Brown, M. M. Mason, New York - 1
• “F. Biscoffs vitrifiable colors for china Celadon, Ann Arbor, Michigan” - 1
• “Williams’ vitrifiable colors for china Ahes of Rose, The Williams Art Importing Co, 499 College Street, Toronto” - 1
• “Heles vitrifiable colors for china Matt Chocolate Brown, Toronto, Canada” – 1
• Overglaze colors for china Rose, The Misses Wynn, Toronto” – 1

According to Google (took a while to research):

Thompson Art Store was located on 64 King Street E. It was the oldest retail art business in Canada est 1860.

In 1906 their adress was listed as 68-70 King St. E. – I don’t know when they moved to this location but it gives us time estimate.

I found that Williams Art Importing Co., 499 College St., Toronto operated in 1919.

In summary, the set belongs to the beginning of the 20th century.