Finally found a decent-looking 1870 rifle that didn't seem exorbitantly overpriced on Gunbroker. Those 1870s are kinda few and far between - there really are lots more 1866s and 1868s out there.
https://www.gunbroker.com/item/918574751
Fresh off the truck:
https://i.imgur.com/TPLNW0Jh.jpg
https://i.imgur.com/sJXYZAAh.jpg
https://i.imgur.com/I9sIEq7h.jpg
https://i.imgur.com/W6qhqXbh.jpg
https://i.imgur.com/GLMUrcmh.jpg
A bit of an odd mixture of quite nice preservation, but with some nasty focal pitting...one spot nfortunately right there at the block markings. Makes me wonder if a couple of pieces have been replaced...
https://i.imgur.com/Tc4H6bZh.jpg
https://i.imgur.com/xO1N9A4h.jpg
https://i.imgur.com/664glASh.jpg
https://i.imgur.com/uV7xyIIh.jpg
The firing proof is visible, but not completely legible.
https://i.imgur.com/0UmaBVSh.jpg
https://i.imgur.com/q4GGXCoh.jpg
https://i.imgur.com/t1jTYcQh.jpg
https://i.imgur.com/ylGWMbXh.jpg
https://i.imgur.com/7oJaoo1h.jpg
Bore isn't the best, but not terrible, all things considered.
https://i.imgur.com/6YcqfNZh.jpg
https://i.imgur.com/mQIxAOOh.jpg
So now, I'm finally able to present a fairly complete group!
https://i.imgur.com/LHKhocEh.jpg
https://i.imgur.com/RC3neOhh.jpg
https://i.imgur.com/T8tynBfh.jpg
https://i.imgur.com/K1kG5VFh.jpg