We can estimate the most probable dates for the start of use for each design and most variations, but unfortunately, not all.  The following are a best guess based on a number of sources, but are subject to correction.

We have listed the introduction dates, but hesitate to estimate the stop date for any particular variation because, of course, there would be supplies of badges left with stores & groups that would be used until they ran out.  So one variation might be around for several years after the design officially changed.

In addition, some badges were produced locally by hand when official supplies were too hard to get, or not available.  We have absolutely no way to date these except to say that they fall within a general design type.

Generally for Cubs:

Badge Style

Year Introduced

Embroidered on Felt, no wording - 1916
Embroidered on Felt, Boy Scouts - 1927
Woven, unbound - 1930
Woven, bound - 1935 (** see additional info below)
Printed on Canvas - 1942, until end of war
Embroidered on Twill, cut edge - Early 1950's
   (border same colour as design)
Embroidered on Twill, cut edge - Mid. 1950's
   (border same colour as background)
Embroidered, rolled edge, Boy Scouts - Late 1950's
Embroidered, rolled edge, no words - 1965
   (size reduced 3mm in early 1990's to fit sash)
Arctic Region special badges - 1964

(** Used after war as well. Dating of these is possible from the reverse of the badge. Brown was the 1935-42 era, black during late 1940's to early 1950's, and white for the later 1950's)

In most cases it will be reasonably safe to use the end of the introduction of a new variety as the end date for the previous one but recognizing that this is not completely accurate.