This is a nice, matching pair of Collar Litzen for a Heer Enlisted/NCO in the Panzer Tank Corps. They have the bottle green backing as used on early uniforms (also worn by the 'ols hands' on later uniform versions as well.

I have two go-to guys for opinions on cloth insignia. One pronounced it 100% good, while the other didn't like it, so did want to disclose that. I did get this detail from my Heer Collar Tab guy (my other guy is more of an SS cloth expert): "The tell on these is that one end of the center Spiegel (dark green line) has 3 points on it.", which I was afraid to admit I didn't exactly follow.