I got some bottles at a construction site in chelsea mass. site of a massive fire in 1908 where everything was leveled and buried, these two cokes where part of the find, is there a way to date these, they are 6 oz. bottles both have boston mass on the bottom one has the diamond with circle with an f above this logo and the other just has a C in a circle they both have small numbers on the side of the bottle one has 55 - 98 not sure on the second digit of 55 though not to clear, the other bottle is much easier to see 52 - 16 are these numbers some sort of date code?