Interesting....I had same problem when one of my 'replacement' resin coils failed (sadly it took out the RHS unit same as yours & I'm pretty sure I screwed up the other side by switching the coils around to identify the problem). I bought proper lucas coils & another Dyna unit but the price had almost doubled in a year (first one was in late 2020, replaced in exactly a year later in 2021). Ultimately I just couldn't get on or go back to the points set up so paid up.
Anyway:
1. They don't sell spare bits
2. Be careful buying small block ignition plates, think you need the single plate version (they aren't all the same & the 'split plate' versions are major PITA)
3. I looked in garage & I have the proper plate V50 mk3 together with a set of points on it plus condensers (you should still have the advnace unit underneath the dynatek plate)
Let me know if you want me to post them to you ?
I'll post a pic when I get a minute
Cheers
Paul
Here's pic, I also have the original points cam if you need it (guessing you only have dynatek plastic hall effect one) ?
PS I can't vouch for points themselves so you may need to buy new ones (about 30 quid at Gutsibits)