ECU-6513-A, I assume this is a 1956? Lincoln valve spring.  If anyone has a Lincoln parts book or Service Specifications Book, or if you have an actual valve spring, I would like to find out any information on this valve spring, such as:

Engine applications and years, free length, open/closed pressure and specified length, ID, OD, # of coils, wire diameter, direction of coil, color stripe or paint color, with or without damper coil, etc ... .  

Thanks.

Regards,

Dennis