I have two Lithograph with the verification of authentication.The number is 375 on both.And there are numbers on left bottom.3+/3+5 and the other is2+/3+5.I cannot make out the signature on either picture.The picture has buildings with green shutters and there is a café called LE CARILLON Restaurant Café.BAR and on the awning it says AU CARILLON DE MONTMARTRE.It looks like the painter last name starts with Lyn not sure.Can you please give me any info on this.