David,
I an including an article about spacers below but it will not help you much on bowies. As tunefink says, sheaths and stones help you more with bowies. Since most bowies were made in 1953 and newer most all of them have thick spacers in the 1950's to the late 1980's/early 1990's.
Regards,
Rhett
Randall Talk #017 Spacers tell the age of your Randall.
Often at a knife show, when someone asks me how old their Randall is, they will see me consult a small pocket size book, that I carry to the shows. I consult a small list, of spacer configurations, that good friend and fellow Randall knife collector, Michael Johnson, gave me several years ago.
Please understand, these dates are only approximations and these dates are to be taken as a range of dates. Many of you might say, "I know better. I bought a knife with that spacer arrangement in 19xx." Well, add two to five years and see if your knife falls into the slot. Remember, approximations. There are some dates for Randalls that are exact and documented, but they are few. Also understand, that some of the ranges below will overlap, as they should, with approximations.
Another important point to remember. These dates (until about 1969-1970) are for handles other than leather, such as stag, ivory, wood and micarta. For leather handled Randalls these dates do not hold true until about 1969-1970. Around then the spacer arrangement became somewhat standardized for all Randall knives.
Late 1930's and early 1940's knives may have any thickness, number, combination and kind of spacers.
The spacers on Bo Randalls first knife are many and unusual. See below.
7 spacers all wide. 1940's (These knives are rare). If any of you have an example of this type of knife please post a picture of the knife and spacers.
7 spacers, 5 thick, 2 thin. Mid/Late 1940's to early 1970's.
3 Seven Spacer Knives from 1940s to 1960s
http://www.randallknifesociety.com/RKSForum/Spacers1950s.jpg[/image]
[img]http://www.randallknifesociety.com/RKSForum/Spacers1960s.jpg
And a late 1960s black micarta handle with 7 spacers.
Unusual early 1940s Model 4-7 with seven spacer.The red spacers on each end are actually two spacers.
(con'td) next post only allowed ten images in a post.