I've now, for the most part, completed my set of Lightweights, the SP7 and SP8 coming recently. They were the hardest to come by since they were produced for the shortest time, and discontinued so long ago. Here is a downsized version of the Schrade Lightweight flyer so you can see the comparative sizes.
The full size flyer with readable text is posted here:
http://www.collectors-of-schrades-r.us/FLYERS/1980s/pages/SC89-81-1.htm
These are the knives in the order they appear in the flyer:
SP8 - The 5" SP8 Cougar was introduced in 1990 and had a 3 3/4" stainless guthook drop point blade. It listed in 1991 for $36.95. This model was discontinued after 1991, a short two year production. (comparable in size to the LB-9) 2 oz.
SP7 - In 1989 Schrade added the SP7 5" Turbo for $29.95. It had a 3 3/4" stainless drop point blade and listed for $29.95. This model was discontinued after 1991, a short three year production. (comparable in size to the LB-7) 2 oz.
SP3 - The second knife introduced in 1987 was the 3 3/4" SP3 Firebird. It had a stainless drop point blade and listed for $24.95. While the model number of this knife changed in1998 to SH3 in the literature and on packaging to denote an included nylon sheath, the tangstamp remained the same. It was offered through the 2004 year, a seventeen year production run. This model became a favorite for special factory orders and special editions. (comparable in size to the LB-5) 1 1/2 oz.
SP2 - The 3" SP2 Raider had a stainless drop point blade and listed for $18.95. This model was produced for fifteen years. (comparable in size to the LB-3) 3/4 oz.
SP1 - The 2 5/8" SP1 Nighthawk was one of the first two Lightweight knives introduced in 1987. It had a stainless drop point blade and the list price for them was $16.95. This model had a seventeen year production run. (comparable in size to the LB-1) 1/2 oz.
While all of these have 'footprints' comparable to the UH LB series with blades of near equal length, their weights are half or less that of the Uncle Henry knives. The LB-7, for instance weighs nearly eight ounces, half a pound compared to the 2 ounce SP7.
I still have to find the two of the three SPX knives, blackened half serrated combo blade versions of the SP1, SP2 and SP3.
Michael