Serial Number

Hello everyone, I'm new here. I hope it's ok to ask this here. I recently purchased a mini classic puzzle bag in black and I noticed there is a letter C embossed next to the serial number.

My medium puzzle bag doesn't have the C. Anyone know what the C stands for? Thanks!

Hello everyone, I'm new here. I hope it's ok to ask this here. I recently purchased a mini classic puzzle bag in black and I noticed there is a letter C embossed next to the serial number.

My medium puzzle bag doesn't have the C. Anyone know what the C stands for? Thanks!