PATTERN 5 Kopecks / 10 Groszy 1842 MW. Bit 1265 (R2), HCz 3746 (R4), Plage 420 (R5), Sev 3379 (RR). Very rare. Authenticated and graded by NGC AU 58. Attractive medium gray with russet and champagne hues. Choice About Uncirculated. Estimated Value $10,000