I found this in the 'Daily Record' dated 17th December 1921: “TOY FAIR at JACK’S NOW OPEN. Bring the Kiddies and see our Beautiful and Interesting Assortment of Toys at Prices unequalled. CLOCKWORK TRAINS, with Set of Circular Rails in Box, complete. Meccano, Games, Musical and Mechanical Toys galore. DOLL'S HOSPITAL. All Kinds of Repairs. Prompt Attention. Workmanship Guaranteed. JACK’S EMPORIUM, 75 TRONGATE (Near Tron Steeple) & 56 COWCADDENS (Near Renfield St.) Phone Bell 2545.” ...and there is a photo of the shop at this link: https://www.theglasgowstory.com/image/?inum=TGSE00091
“TOY FAIR at JACK’S NOW OPEN. Bring the Kiddies and see our Beautiful and Interesting Assortment of Toys at Prices unequalled. CLOCKWORK TRAINS, with Set of Circular Rails in Box, complete. Meccano, Games, Musical and Mechanical Toys galore. DOLL'S HOSPITAL. All Kinds of Repairs. Prompt Attention. Workmanship Guaranteed. JACK’S EMPORIUM, 75 TRONGATE (Near Tron Steeple) & 56 COWCADDENS (Near Renfield St.) Phone Bell 2545.”
...and there is a photo of the shop at this link:
https://www.theglasgowstory.com/image/?inum=TGSE00091