What does this blue line indicate

r/CURRENCY focuses on paper money and coin identification, discussion and displaying of your awesome currency. This community is moderated by a very, very experienced collector with a lifetime of "REAL WORLD EXPERIENCE"!!! All collectors from Beginners to the very Experienced are welcome here. All posts are welcomed from Errors (Minor, Medium, Major) on coins and paper to all Fancy Serials and all Star Notes!! If you have questions on "Pocket Money" or "Damaged" coins and paper money, ask us.

Dash speakers clipping

For The Car Audio and Video beginners to enthusiast to everything in between! Heads, Subs, EQs, etc... Bring it into our show room. Q&A, Advice, Tips, tricks and tech welcome! If you are new to the hobby, you can subscribe, post and view our wiki for basic starting information. If you are a long time veteran, feel free to use this as a form to discuss with other like minded enthusiasts.

Head unit clipping

Welcome to r/Camry! The #1 subreddit for all things Toyota Camry. Make yourself comfortable, and don’t forget to become part of the community.

Amp selection question

For The Car Audio and Video beginners to enthusiast to everything in between! Heads, Subs, EQs, etc... Bring it into our show room. Q&A, Advice, Tips, tricks and tech welcome! If you are new to the hobby, you can subscribe, post and view our wiki for basic starting information. If you are a long time veteran, feel free to use this as a form to discuss with other like minded enthusiasts.

Extra agm battery or big 3

For The Car Audio and Video beginners to enthusiast to everything in between! Heads, Subs, EQs, etc... Bring it into our show room. Q&A, Advice, Tips, tricks and tech welcome! If you are new to the hobby, you can subscribe, post and view our wiki for basic starting information. If you are a long time veteran, feel free to use this as a form to discuss with other like minded enthusiasts.