What is the influence of coin grading for catalogue prices? Analysis on the basis of catalogues FISCHER publisher for the year 2010. The FISCHER has been publishing "Catalogue of polish coins GRADING". According to the author, Adam Łanowy, currently In polen is over 1.400.000 polish coins with grading notes.

In coin collecting, coin grading is the process of determining the grade or condition of a coin, one of the key factors in its value as a collector's item. Polish grading scale consists of five grades and additional proof states: V (the lowest grade), IV, III, II, I, L (proof). Polish grading scale is not equal to American or Britain scale. As of 2008, there are three prevalent coin grading services: PCGS, NGC, and ANACS. There are subtle variations in the grades assigned by each of these major services, and prospective buyers are encouraged to seek professional or expert advice before making any important rare coin purchases.

Additionally mint/proof state grading system is listed below.

• MS/PR-60: No wear. May have many heavy marks/hairlines, strike may not be full
• MS/PR-61: No wear. Multiple heavy marks/hairlines, strike may not be full
• MS/PR-62: No wear. Slightly less marks/hairlines, strike may not be full
• MS/PR-63: Moderate number/size marks/hairlines, strike may not be full
• MS/PR-64: Few marks/hairlines or a couple of severe ones, strike should be average or above
• MS/PR-65: Minor marks/hairlines though none in focal areas, above average strike
• MS/PR-66: Few minor marks/hairlines not in focal areas, good strike
• MS/PR-67: Virtually as struck with minor imperfections, very well struck
• MS/PR-68: Virtually as struck with slight imperfections, slightest weakness of strike allowed
• MS/PR-69: Virtually as struck with minuscule imperfections, near full strike necessary
• MS/PR-70: As struck, with full strike

Collector coins prices analysis

• number of coins with grading :
• number of coins with the grading PR70 price larger then price without grading: (0%)
• number of coins with the grading PR70 price equal to price without grading: (0%)
• number of coins with the grading PR70 price smaller then price without grading: (0%)
• number of coins with the grading PR69 price larger then price without grading: (0%)
• number of coins with the grading PR69 price equal to price without grading: (0%)
• number of coins with the grading PR69 price smaller then price without grading: (0%)

Prices of collector coins with and without grading