You need to post pics of the movement so someone can tell you what you actually have.
I sent an email to phong about this exact subject and this is what he replied to me; I was asking him if a 2500$ 1655 was worth getting
Adam, I know many sell cheap, but not the one you want, they use 1570 and modify GMT from Viet Nam not original genuine GMT parts, and some time there crystal glue not like my factory spec fit right on and no need glue, and some time bezel fonts is wrong , many thing can be wrong, you know the original movement value original GMT $2750.00 just movement alone, 1570 regular no GMT only cost $1200.00 and you buy GMT original parts put in is cost $1000.00 and hard to find original parts. so good case 1250.00 dial $265.00 hand set $125.00 labor installation and Clean over haul warranty 1 year $400.00 this is truly cost if you add up and I will make some money to stay in business, you need to wait until you have my daytona and find out how my work. many people buy my watch to use it while and resell they make good money, because even collector they look it can not tell. or resell to got same value they purchased
I guarantee you if you buy 2750.00 explorer II if you open it to see movement GMT parts is production from Viet Nam not like my. I am sorry I can not match that price but I can do for $4000.00 Best regards,
Phong