so this bike was my nans, and was given to me in the 80's and is probably the nicest bike to ride I've ever had. this weekend feeling all nostalgic ( and fed up with my nasty mountain bike) i decided to get it out clean it up and go for a spin, cleaning it up i tryed to tell whats original and whats not, then had a look on the web to try and see what it is, and am now very confused so any help would be great, so parts,
ladies blue spots frame serial no on bottom bracket :516299 z ( so not Raleigh ?)
what i think is the remains of a calton decal on the front,
bayliss whiley freewheel single speed hub,reviersable with a fixed gear on the other side,
all steel wheels with every spoke stamped with a r on the end,
raleigh birds front cog ( not sure what its called),
raleigh rubber block peddles ,
two tone saddle to match paint,
color mached brack cables,

white mudguards the only bit i dont think original though they are old
hokey stick chain gard white, black on the inside.
is all lovely and clean and put back together now but it would be nice to give it a age, thinking late 50's, or did my granddad put it together form a pile of bits ?