So is here any price-wise relationship between these? I think the Holyoke MA L-4 HS precancel is more attractive.
I just found this Holyoke precancel. It is the first one discovered on this denomination - after 101 years! Now the only unknown denominations are 50 cent and 1 dollar. It will be listed in the new classics catalog at 40$.
I think the funnest aspect of precancel collecting is the possibility of finding unlisted and unique items.