I noticed on the price list of tobacco products for 1947 that some brands came only in tins of 100. Totally impracticable for taking with you about town. I used to have a pewter cigarette tin once that held 100. After filling it, I would take a few and fill an old cigarette packet for going out, until I bought a pocket tin that could fit 10 down at the boot menders. Army Club only came in packets of 10. It may of been a convenient size for someone who's cigarettes usually only came in tins.