Sorry, you've been badly misinformed. That spur looks NOTHING like the actual Confederate "Richmond model" spur. You can view one of that kind here:
Confederate Richmond Spur - SOLD - Old Militaria
Warning:
You can almost never trust an Ebay seller to tell you a civil war relic's correct identification. There are a few trustworthy relic-dealers on Ebay but they are greatly outnumbered by the scammers there. Believe me about that... for many years, I worked with Ebay as a civil war relics Authenticator.
However, RelicHnter's find is indeed a Confederate-made version. The ID-clues for his spur are:
The tang turns horizontal at a 120-degree elbow.
The top of the tang is flat.
Spur-ID Trivia:
Usually when you see the ENTIRE "body" of the strap-holders is neatly rectangular, it means a yankee-made spur. (Such as the very plentiful US Model-1859 Enlisted-man's spur, seen in the photo below.) RelicHnter's version of Confederate-made spur is an exception to that rule-of-thumb. Closely compare his CS one's tang with the US Model-1859 in the photo below. Notice that on the US 1859, the tang's top side is not flat, and the tang has a smoothly rounded curve instead of the CS version's 120-degree-angle elbow.