The 152 pattern was used by Peterson Publishing in 1976-77, along with the 154 pattern, for promotion of two-year subscriptions. Shields on the black sawcut Delrin handles were stamped with the magazine names, "Guns & Ammo" on the Sharpfinger, and "Hunting" on the Drop Point Hunter. I’ve not seen both patterns with both stampings. They used the production 1095HC blade blanks and custom "SCHRADE over U.S.A." tang stamps. As an interesting aside, after years of searching, I finally acquired an example of this knife in it's original shipping box from Peterson. It contained a SAS17 pouch sheath and the box was post marked 1983. So did Peterson order remainders in 1983 when their supply of 1983 promo knives (a different brand) was used up, but obligations were still outstanding to subscribers?
I did some more research, sans access to the issues of G&A magazine, to see just when the offer began and ended. Perusing old factory production records brought some more information to light. Here is the original 1977 magazine ad in close detail. Note the stated offer end date: October 31st, 1977.
Year end records show none produced in 1975, but 1976 records show an order for 20,350 knives with 14,250 shipped by year's end and 1,676 left in stock. 1977 records show a final shipment of 6,000 knives and 42 left in stock. 1979 and 1980 both show no shipments and 249 left in stock. Those disappeared unaccounted for in 1981 with no shipments noted and none in stock.
But the year end records in 1982 show 9,548 shipped. 1983, the year of the above dated example, shows 32,931 pieces shipped and a final 2,500 shipped in 1984.
So it appears that the Sharpfinger 152GA was offered and produced twice. First production beginning in 1976 totaled 30,600 pieces. Second production beginning in 1982 totaled 44,979 pieces, for an overall total production of 75,579 knives.
Of the two production runs, the earlier 1976 run would be the least common, though neither are low production by any metric. This explains why so many show up on that auction site year after year, most of which are used to one degree or another. One could surmise that this is because the majority of original owners were multi-year subscribers of Guns & Ammo and therefore more likely to be active hunters and outdoorsmen than the average retail purchaser.
In summation, the sheer number produced and shipped, 75,579, dictates that this SFO is by no means rare. However it appears that new in the box examples are uncommon and therefore somewhat attractive as a collectable to fans of the pattern. With these two production examples in hand, I am done with actively searching for examples of this SFO. Unless... a NIB example with the more familiar SAS-19 handle retainer strap comes to my attention. Duck/junebug.
Oh, and anyone who happens across a later (1982-84) Guns & Ammo ad for this knife, please bring it to my attention. Better still if you can give me a good scan. I cannot afford to buy those 36 magazine back issues to pin down the offer dates and attempts to get sellers on the auction site to look through their issues have been fruitless so far.