What is the influence of catalogues for market (auction) prices? Which of polish numismatics catalogues is the best? Each year in Poland a few catalogues about collector coins are issued. The most popular ones (polish titles):

• Parchimowicz - Katalog monet polskich obiegowych i kolekcjonerskich (Catalogue of polish collector and occasional coins)
• Fischer - Katalog monet polskich (Catalogue of polish coins)
• Kurnik - Katalog monet polskich (Catalogue of polish coins)

Catalogue and auction (market) prices

Following graphs describe percentage differences between market (auction) and catalogue prices for each catalogue. The point of reference (line 0) is the market price (mouth 12) in the year 2018. The highest number of points is nearby point of reference (line 0) the better is catalogue in price prediction.

Which catalogue is the best?

In each catalogue one can find basic information about coins: image, year of issue, dimensions, metal, finish, diameter, weight, mintage and catalogue price. Functionally catalogues can be describe as is in the following table.

	Parchimowicz	Fischer	Kurnik
Catalogue parameters
cover image
arrangement	chronological with face value	chronological with face value	with face value
coin's identyfication	the same	changeable	the same
cover	soft	soft	soft
format	180×115 mm	206×147 mm	210×148 mm
publisher	NEFRYT	FISCHER	CEZAR24
Collector coins prices analysis
number of coins	432	432	13
maximum price deviation	130 %	115 %	92 %
average price deviation	40 %	30 %	18 %
Nordic Gold coins prices analysis
number of coins	260	269	260
maximum price deviation	233 %	160 %	197 %
average price deviation	65 %	34 %	75 %