Having a BFG badge is appropriate with a late 55 date because, 55 is the year of Schwinn's 'New Style' springer. Yours has 'Old Style' and many Black Phantoms plus other models that were sold or distributed to other than Schwinn outlets or catalogs that were not Schwinn badge got their discontinued stock. Actually, there's Both, Schwinn badged and other than yet by late 1955 then, given that typically your bike would not have been built for a few months it was probably sold in 1956.
That might seem like a bad thing back then; Not having the newest best version but today it's good B/C There's no repop front fenders for the newest 1955-59 Phantoms. All of the repop 1995 Phantoms are based on the 52's and they'll fit on yours while the 1990's Schwinn Deluxe versions are based on 55 'New Style' springer and front fender that is narrower and came with plastic screw-on fender light housing with no light bucket. So, while it may seem redundant, it's good to know. Not just that but, in the repop arena, during 95-2002 Schwinn made special wide front and rear fenders to fit the 'Old Style' Phantom frame and springer on the Cruiser Deluxe with Nexis 7 (not to be confused with Schwinn's 'Deluxe 7' that has narrower fenders) but while it's properly wide, the front fender has no light bucket, only a black or red plastic screw-on fender.