Frame number Slimline Featherbed

If that number was correct, it would indicate a 1961 frame. However, the number is in the wrong place. It should be on the gusset of the rear frame loop, on the nearside, behind the primary chaincase. It should be preceded by a model code.

Looks like a replica frame from the States. Looks Tig welded, not Sif Bronze brazed. The gussetting is not as heavy as my 1967 Atlas frame. USA replicas were stamped by county licensing offices. I nearly bought a Sealy Trident five years ago in Florida, but Mr Sealy said it was not his! Buyer beware these days on old stuff. If it fits, use it. If it doesn't, make it fit, paint it, flog it on eBay. Unfortunately, many people are doing it, and even the best of us get caught sometimes. I have a spare swinging arm for a Slimline frame, lots of other bits too!

Only the Manx and very early Featherbed frames were Bronze brased. All of the Slimline frames were welded. The frame shown in Ron's photos clearly has the ID numbers stamped in the wrong position. Plus they do not look like those used by the Norton factory. The style being quite different from those generally used on Norton frames. The numerals are slightly larger, thinner and lacking the tail points generally seen.

(IMO) Consider Paul;s comments as not having any validity. .

It has a welded fork stop so it is later style (65+), whether real norton or not.

Pix of other areas would help immensly. rear shock mounts, right side top frame rail (pump mount). Bead blasted LH rear lower frame gusset ( looking for frame number tampering)

Repop frames are NOT a big thing here in the USA....Why make them when still quite affordable here?

Only WIDE LINE frames for building hot rods are more sought after, not slimlines. what is yours?