Small black Puma bag lost on bus

I lost a small, black Puma bag on a bus on Saturday, Dec 6. It was most likely a 61 bus, although I was later on the 28X. I was in the Dunkins on Forbes in Oakland briefly, so there's also some chance that I left the bag in the shop. The bag is entirely black except the 'Puma' letters written on it. It's about the size that a small or mid-sized iPad would fit inside; one would carry the bag on a single shoulder.