One of the ways to distinguish H/L relief is to view a number of slabbed coins. The high relief coins appear thicker or plumper than low relief, which appear more defined in the valleys and have a thinner(?) appearance. I have seen 'Bold' strike used to describe high relief stars. The problem with determining H/L is exacerbated when judging circulated coins. Your coin, my opinion, low relief.
Do not be confused by Krause listing a "Weak strike" of the key and palm tree on the reverse. Since no pics. are offered to show examples of "Weak strike", ignore this criteria because it is subject to individual interpretation.
Found an article covering the subject of High vs. Low Relief coins. Might help. It's in the valleys. http://www.allcubancoins.com/coin-guide/high-vs-low-relief-cuban-coins/
The 1915 40 centavos H/L star relief is difficult to determine because of the wear. If forced to decide, I would lean toward high relief. Reality is, only MS graded coins have significant value and depending upon the wind direction, it's a toss up which relief garners more $. As I have stated in this or other posts, two NGC graded coins look the same to me and I used my Magoo glasses. You did not ask for an eval., but I offer my opinion in good spirit.
I was able to purchase some of these on Ebay before the company embargo on all Cuban coins: Cuba 1 Centavo 1953 Jose Marti Centenary (Brass, 17 mm, 2.3 gm) Cuba 25 Centavos 1953 Jose Marti Centenary (Silver, 24 mm, 6.25 gm) Cuba 50 Centavos 1953 Jose Marti Centenary (Silver, 31 mm, 12.5 gm) Cuba 1 Peso 1953 Jose Marti Centenary (Silver, 38 mm, 26.80 gm)
Seeing all of your cool Cuban coins makes me realize my Foreign Album is puny WRT Cubans. The only one I have is this 2002 5 Centavos.
more.... The 1984 brass peso was in UNC grade. Totally made my day when I bought off Ebay. I got in a bidding war on Ebay for this date 1989. I still need the 1983 date for coin type.