Ken, unfortunately, without more context or specific information about the "Nails" and the serial numbers you provided, it's challenging to verify their authenticity or determine their value accurately. Additionally, the description of a "Circle with a single R in the middle" doesn't provide enough detail to identify the items you're referring to.
geometry dash unblocked If you're referring to a particular brand or type of nail or drill, it would be helpful to provide more details such as the brand name, model, condition, and any distinguishing features. Including clear photos can also aid in identification and valuation.
As for determining the value of your items, factors such as brand reputation, condition, age, and market demand will all play a role. You may consider consulting with experts in the field, such as collectors or appraisers, who can provide a more accurate assessment based on the specifics of your items.