4 ancient roman rings, 3 silver, 1 bronze, believed to be from around 200AD

Requesting appraisal on each individually, all as a group, or both.

Thanks in Advance

#1 - 12.4grams, silver in color, cannot make out what is on face of ring, fully intact with noticeable wear

#2 - 8.6grams, silver in color, cross type pattern with lines going out of the corners of the cross like sunrays, fully intact with noticeable wear

#3 - 5.6grams, silver in color, diamond design with rays coming off it on face of ring, fully intact, noticeable wear

#4 - 5.3grams, bronze in color, Octagon shape in middle with sun rays coming off of the octagon on face of ring. Ring band is broke on one side close to face of ring, and close to the face on the other side, the band is cracked half way through.