Help Identifying Washington Red 2c

Hello! I joined this forum in hopes that some knowledgeable collectors could help me get to know these stamps a little better that were passed down from a relative. I doubt they have much value, but am enjoying learning more about this interesting hobby!
In the collection there are a few red 2c Washingtons; this one I'm having trouble identifying. I think it is either a 219 or 220 according to pictures I've come across. I see that there are a,b,c, etc, subcategories of 219s and 220s as well.
There looks to be an ink drip or something in the bottom left corner in the red ink near the 2. I can't tell if it is an accident or intentional. Also there's a thumb print.
Can anyone point me in the right direction here? Thanks!

There is a lot of good information on this sight .http://www.stampsmarter.com/1847usa/index.htm

Scott 220. No triangles, no caps on the left or both "2"s.

Thank you both, that info was very helpful.
Is the stamp worth keeping with the fingerprint over the face?

I agree with the previous answers, this is 220. The "thumbprint" is the postal cancel, not a thumbprint. Value is nominal.

To clarify the catalog numbers in the original post, your choices are 219D (lake) or 220 (shades of carmine and rose). It is not 219, which is a blue 1 cent stamp.

Although scanned images for purposes of color ID have drawbacks due to scanner and screen variability, here are 219D and 220 scanned together from dated covers. The top is 219D, postmarked April 22, 1890 (although 220 was available by then, this is the earlier lake shade), and on the bottom is 220 postmarked in July 1890. Yours is clearly the later shade.