I have three paintings, there first one is titled Le Paris de Notre Dame. The second one is titled La rue Nowins-Montmartre. The third is titled Lacre Coeur et funiculaire. All three have a C (with a circle around it) and 1980-Lutece (accent over the first e) Edition- PARIS; in the bottom right hand corners. Every painting has the artist's signature, the first and third are in the lower right hand corner of the painting and the second is in the lower left hand corner of the painting, I just don't know what it reads. If anyone knows what these lithographs would be valued at and who this artist is I would be more than grateful to find out!
I added a picture of the Le Paris de Notre Dame painting with the signature enlarged, so if anyone is good with signatures, they could take a look at it. Thanks.