Card values depend on condition, grade, and current market demand for early 1990s hockey cards. Check recent sold listings to see what collectors are paying for similar copies. ## Are 1991-92 Pro-Set hockey cards a good investment? Early 1990s Pro-Set releases appeal to vintage hockey collectors and nostalgia-driven investors. Condition-graded copies of key players and scarce variations have shown steady collector interest, though the market is more stable than speculative. ## How many Bob Errey cards exist in the 1991-92 Pro-Set Series 1? Pro-Set's 1991-92 Series 1 was widely printed, so Bob Errey cards are relatively available. Team collectors and vintage set builders can usually find copies without difficulty on the secondary market.