Mike here from Camano Island Washington. Happy to see this old thread still rolling. So I scored a Trenton anvil the other day in exchange for moving a trailer for someone. Im pretty sure that I win the prize for the oldest Trenton in this thread. I have a serial number of A10621, maker initial M, no weight stamp. I havent weighed it yet but its a bit more than I can manage by my self. If someone can confirm the date for me I would greatly appreciate it.